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POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG
TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL )
SOAL
1. Dengan menggunakan sifat bilangan, sederhanakan bentuk-bentuk berikut`
a) 22
x 29
=
b) a10
x a-9
=
c) (66
)5
=
d) 5-2
: 57
=
e) a8
: b-3
=
f) (a3
x a5
) =
2. Dengan menggunakan sifat bilangan, sederhanakan bentuk-bentuk berikut:
a) 26/5
x 21/3
=
b) 27/2
x 28/5
=
c) 32/5
: 36/6
=
d) B5/3
: b-7/4
=
e) (a5/3
x a3/5
) =
3. Sederhanakan bentuk-bentuk berikut:
a) 4√ + 2√ - 7√ =
b) 6√ – 8√ + 3√ =
c) 5√ + 4√ - 2√ =
d) 7√ - 3√ - 6√ =
4. Sederhanakan perkalian-perkalian berikut ini :
a) 3√ x 4√
b) 5√ x 6√
c) 33
√ x 42
√
d) 65
√ 3
x 53
√ 2
5. Rasionalkan bilangan berikut ini:
a)
√
b)
√
c) √ √
d)
√ √
6. Sederhanakan bentuk pangkat berikut
a) (x + y)5
b) (x - y)4
c) (2x + 3y)5
d) (3x – 2y)4
POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG
TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL )
Jawaban
1. A. 26
x 29
= 26+9
=215
B. a10
x a-9
= a10-9
= a
C. (66
)5
= 66x5
= 6 30
D. 5-2
: 57
= 5-2-7
= 5-9
=
E. a8
: b-3
= a8
=
F. (a3
x a5
)6
= (a3+5
)6
= (a8
)6
= a48
2. A. 26/5
x 21/3
= 26/5+1/3
= 218/15+5/15
= 223/15
B. a7/2
x a8/5
= a7/2 + 8/5
= a35/10 + 16/10
= a51/10
C. 32/5
: 36/6
= 32/5
: 3
= 32/5 – 5/5
= 3-3/5
D. b5/3
: b-7/4
= b5/3 – (-7/4)
= b20/12 + 21/12
= b41/12
E. ( a5/3
x a3/5
)3
= (a25/15 + 9/15
)3
= (a34/15
)3
= a34/5
3. A. 4√ + 2√ + - 7√ = (4+2-7)√
= -√
B. 6√ - 8√ + 3√ =( 6 – 8 )√ + 3√
= -2√ + 9√
= 7√
C. 5√ + 4√ - 2√ = 5√ +4√ - 2√
= 5√ + 8√ - 6√
= 7√
POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG
TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL )
D. 7√ - 3√ - 6√ = 7√ - 3√ - 6√
=( 7 – 6 – 24) √
= -23 √
4. A. 3√ x 4√ = 12√
= 12√
= 24√
B. 5√ x 6√ = 30√
= 30√
=60√
C. 33
√ X 42
√ = 27 X 16 √
= 432√
D. 65
√
3
x 53
√
2
= 65
X 53
X 6 √
= 46.656.000
5. A.
√
=
√
=
√
=
√
x
√
√
=
√
B.
√
=
√
X
√
√
=
√
=
√
C.
√ √
=
√ √
√ √
√ √
=
√ √
=
√ √
= - (√ + √ )
D.
√ √
=
√ √
x
√ √
√ √
=
√ √
= 12 ( √ - √ )
POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG
TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL )
6. A . ( X + Y )5
= (X + Y ). (X + Y ) .( X + y )3
= (X2
+ 2XY + Y2
). ( X3
+ 3X2
Y + 3XY2
+ Y3
)
= X5
+ 5X4
Y + 10X3
Y2
+ 10X2
Y3
+ 5XY4
+Y5
B. ( X – Y )4
= ( X – Y )2
. ( X – Y )2
= ( X2
– 2XY + Y2
) . ( X2
– 2XY + Y2
)
= X4
– 4X3
Y + 6X2
Y2
– 4X2
Y2
+ Y4
C. ( 2X + 3Y )5
= (2X)5
+ 5 . (2X)4
3Y + 10 (2X)3
(3Y)2
+ 10 (2X)2
(3Y)3
+ 5 (2X) (3Y)4
+ (3Y)5
= 32X5
+ 5.(16X4
).(3Y) + 10.(8X3
).(9Y2
) + 10.(4X2
).(27Y3
) + 5.(2X).(81Y4
) +243Y5
= 32X5
+ 240X4
Y + 720X3
Y2
+ 1080X2
Y3
+ 810XY4
+ 243Y5
D. ( 3X – 2Y )4
= ( 3X)4
+ 4 .(3X)3
.(-2Y) + 6 (3X)2
.(-2Y)2
+ 4 .(3X).(-2Y)3
+ (-2Y)4
= 81X4
– 4 .(27X3
) .(2Y) + 6 (9X2
).(4Y2
) – 4 .(3X).(8Y3
) + 16Y4
= 81X4
– 216X3
Y + 216X2
Y2
–96XY3
+ 16Y4

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Tugas mtk 1.01

  • 1. POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL ) SOAL 1. Dengan menggunakan sifat bilangan, sederhanakan bentuk-bentuk berikut` a) 22 x 29 = b) a10 x a-9 = c) (66 )5 = d) 5-2 : 57 = e) a8 : b-3 = f) (a3 x a5 ) = 2. Dengan menggunakan sifat bilangan, sederhanakan bentuk-bentuk berikut: a) 26/5 x 21/3 = b) 27/2 x 28/5 = c) 32/5 : 36/6 = d) B5/3 : b-7/4 = e) (a5/3 x a3/5 ) = 3. Sederhanakan bentuk-bentuk berikut: a) 4√ + 2√ - 7√ = b) 6√ – 8√ + 3√ = c) 5√ + 4√ - 2√ = d) 7√ - 3√ - 6√ = 4. Sederhanakan perkalian-perkalian berikut ini : a) 3√ x 4√ b) 5√ x 6√ c) 33 √ x 42 √ d) 65 √ 3 x 53 √ 2 5. Rasionalkan bilangan berikut ini: a) √ b) √ c) √ √ d) √ √ 6. Sederhanakan bentuk pangkat berikut a) (x + y)5 b) (x - y)4 c) (2x + 3y)5 d) (3x – 2y)4
  • 2. POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL ) Jawaban 1. A. 26 x 29 = 26+9 =215 B. a10 x a-9 = a10-9 = a C. (66 )5 = 66x5 = 6 30 D. 5-2 : 57 = 5-2-7 = 5-9 = E. a8 : b-3 = a8 = F. (a3 x a5 )6 = (a3+5 )6 = (a8 )6 = a48 2. A. 26/5 x 21/3 = 26/5+1/3 = 218/15+5/15 = 223/15 B. a7/2 x a8/5 = a7/2 + 8/5 = a35/10 + 16/10 = a51/10 C. 32/5 : 36/6 = 32/5 : 3 = 32/5 – 5/5 = 3-3/5 D. b5/3 : b-7/4 = b5/3 – (-7/4) = b20/12 + 21/12 = b41/12 E. ( a5/3 x a3/5 )3 = (a25/15 + 9/15 )3 = (a34/15 )3 = a34/5 3. A. 4√ + 2√ + - 7√ = (4+2-7)√ = -√ B. 6√ - 8√ + 3√ =( 6 – 8 )√ + 3√ = -2√ + 9√ = 7√ C. 5√ + 4√ - 2√ = 5√ +4√ - 2√ = 5√ + 8√ - 6√ = 7√
  • 3. POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL ) D. 7√ - 3√ - 6√ = 7√ - 3√ - 6√ =( 7 – 6 – 24) √ = -23 √ 4. A. 3√ x 4√ = 12√ = 12√ = 24√ B. 5√ x 6√ = 30√ = 30√ =60√ C. 33 √ X 42 √ = 27 X 16 √ = 432√ D. 65 √ 3 x 53 √ 2 = 65 X 53 X 6 √ = 46.656.000 5. A. √ = √ = √ = √ x √ √ = √ B. √ = √ X √ √ = √ = √ C. √ √ = √ √ √ √ √ √ = √ √ = √ √ = - (√ + √ ) D. √ √ = √ √ x √ √ √ √ = √ √ = 12 ( √ - √ )
  • 4. POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG TUGAS MATEMATIKA 1 AREHAN SANADA 1EB ( BILANGAN RIIL ) 6. A . ( X + Y )5 = (X + Y ). (X + Y ) .( X + y )3 = (X2 + 2XY + Y2 ). ( X3 + 3X2 Y + 3XY2 + Y3 ) = X5 + 5X4 Y + 10X3 Y2 + 10X2 Y3 + 5XY4 +Y5 B. ( X – Y )4 = ( X – Y )2 . ( X – Y )2 = ( X2 – 2XY + Y2 ) . ( X2 – 2XY + Y2 ) = X4 – 4X3 Y + 6X2 Y2 – 4X2 Y2 + Y4 C. ( 2X + 3Y )5 = (2X)5 + 5 . (2X)4 3Y + 10 (2X)3 (3Y)2 + 10 (2X)2 (3Y)3 + 5 (2X) (3Y)4 + (3Y)5 = 32X5 + 5.(16X4 ).(3Y) + 10.(8X3 ).(9Y2 ) + 10.(4X2 ).(27Y3 ) + 5.(2X).(81Y4 ) +243Y5 = 32X5 + 240X4 Y + 720X3 Y2 + 1080X2 Y3 + 810XY4 + 243Y5 D. ( 3X – 2Y )4 = ( 3X)4 + 4 .(3X)3 .(-2Y) + 6 (3X)2 .(-2Y)2 + 4 .(3X).(-2Y)3 + (-2Y)4 = 81X4 – 4 .(27X3 ) .(2Y) + 6 (9X2 ).(4Y2 ) – 4 .(3X).(8Y3 ) + 16Y4 = 81X4 – 216X3 Y + 216X2 Y2 –96XY3 + 16Y4