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𝒑𝒈 𝟏𝟎𝟑 − 𝟏𝟎𝟒 𝒃𝒊𝒒𝒖𝒂𝒅𝒓𝒂𝒕𝒊𝒄 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝒑𝒈 𝟏𝟎𝟓
𝒙 = 𝟒 𝒙 = − 𝟒 𝒙 = 𝟓
𝒙 =
𝟐
𝟑
𝒙 = −
𝟐
𝟑
𝒙 = 𝟏 + 𝟔 𝒙 = 𝟏 − 𝟔
𝒙 =
𝟏
𝟐
+
𝟐
𝟐
𝒙 = − 𝟓
𝒙 =
𝟑
𝟑
𝒙 = −
𝟑
𝟑
𝒙 = 𝟏 + 𝟕 𝒙 = 𝟏 − 𝟕
𝒙 =
𝟏
𝟐
−
𝟐
𝟐
𝒃𝒊𝒒𝒖𝒂𝒅𝒓𝒂𝒕𝒊𝒄 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝒑𝒈 𝟏𝟎𝟒
𝑳𝒆𝒕 𝒛 = 𝒙𝟐
− 𝟖𝒙
= 𝒛 + 𝟕 𝒛 + 𝟏𝟓 + 𝟏𝟓
= 𝒛𝟐 + 𝟕 + 𝟏𝟓 𝒛 + 𝟕 𝟏𝟓 + 𝟏𝟓
𝒙 =
−𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄
𝟐𝒂
𝒎𝒆𝒕𝒉𝒐𝒅 𝒐𝒇 𝒄𝒉𝒂𝒏𝒈𝒊𝒏𝒈 𝒕𝒉𝒆 𝒗𝒂𝒓𝒊𝒂𝒃𝒍𝒆
𝒑𝒈 𝟏𝟎𝟓
𝒙 = 𝟐 𝒙 = −𝟕
𝒙 =
𝟓
𝟐
+
𝟐𝟗
𝟐
𝒙 =
𝟓
𝟐
−
𝟐𝟗
𝟐
𝒎𝒆𝒕𝒉𝒐𝒅 𝒐𝒇 𝒄𝒉𝒂𝒏𝒈𝒊𝒏𝒈 𝒕𝒉𝒆 𝒗𝒂𝒓𝒊𝒂𝒃𝒍𝒆
𝒑𝒈 𝟏𝟎𝟓 − 𝟏𝟎𝟖 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝒑𝒈 𝟏𝟎𝟖 − 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝟐. 𝟔𝒙𝟒
+ 𝒙𝟑
− 𝟓𝟖𝒙𝟐
+ 𝒙 + 𝟔 = 𝟎
𝟔𝒙𝟐 + 𝒙 − 𝟓𝟖 +
𝟏
𝒙
+
𝟔
𝒙𝟐
= 𝟎
𝟔 𝒙𝟐
+
𝟏
𝒙𝟐
+ 𝟏 𝒙 +
𝟏
𝒙
− 𝟓𝟖 = 𝟎
𝑳𝒆𝒕 𝒚 = 𝒙 +
𝟏
𝒙
𝒙𝟐 +
𝟏
𝒙𝟐
= 𝒚𝟐 − 𝟐
𝟔 𝒚𝟐
− 𝟐 + 𝒚 − 𝟓𝟖 = 𝟎
𝟔𝒚𝟐
− 𝟏𝟐 + 𝐲 − 𝟓𝟖 = 𝟎
𝟔𝒚𝟐 + 𝐲 − 𝟕𝟎 = 𝟎
(𝟑𝐲 − 𝟏𝟎)(𝟐𝒚 + 𝟕) = 𝟎
𝒚 =
𝟏𝟎
𝟑
𝒚 = −
𝟕
𝟐
𝒘𝒉𝒆𝒏 𝒚 = 𝒙 +
𝟏
𝒙
=
𝟏𝟎
𝟑
𝟑𝒙𝟐 − 𝟏𝟎𝒙 + 𝟑 = 𝟎
(𝟑𝒙 − 𝟏)(𝒙 − 𝟑) = 𝟎
𝒙 =
𝟏
𝟑
𝒙 = 𝟑
𝒘𝒉𝒆𝒏 𝒚 = 𝒙 +
𝟏
𝒙
= −
𝟕
𝟐
𝟐𝒙𝟐
+ 𝟕𝒙 + 𝟐 = 𝟎
𝒙 =
−𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄
𝟐𝒂
𝐚 = 𝟐
𝒃 = 𝟕
𝐜 = 𝟐
𝒙 =
−𝟕 ± 𝟕𝟐 − 𝟒 𝟐 𝟐
𝟐 𝟐
𝒙 =
−𝟕 ± 𝟑𝟑
𝟒
𝟓. 𝟒𝒙𝟓 − 𝒙𝟒 − 𝟔𝒙𝟑 − 𝟔𝒙𝟐 − 𝒙 + 𝟒 = 𝟎
𝟒𝒙𝟐 − 𝟓𝒙 − 𝟏 −
𝟓
𝒙
+
𝟒
𝒙𝟐
= 𝟎
𝟒 𝒙𝟐 +
𝟏
𝒙𝟐
− 𝟓 𝒙 +
𝟏
𝒙
− 𝟏 = 𝟎
𝑳𝒆𝒕 𝒚 = 𝒙 +
𝟏
𝒙
𝒙𝟐
+
𝟏
𝒙𝟐
= 𝒚𝟐
− 𝟐
𝟒 𝒚𝟐
− 𝟐 − 𝟓𝒚 − 𝟏 = 𝟎
𝟒𝒚𝟐 − 𝟖 + 𝟓𝐲 − 𝟏 = 𝟎
𝟒𝒚𝟐
+ 𝟓𝐲 − 𝟗 = 𝟎
(𝟒𝐲 − 𝟗)(𝒚 + 𝟏) = 𝟎
𝒚 =
𝟗
𝟒
𝒚 = −𝟏
− 𝟔 − 𝟏 𝟒
𝟒
− 𝟒
− 𝟓 − 𝟏
𝟒
− 𝟒 𝟓 𝟓
𝟒
− 𝟏
− 𝟏 − 𝟔
− 𝟓
𝟏
(𝒙 − 𝟏)(𝟒𝒙𝟒
− 𝟓𝒙𝟑
− 𝒙𝟐
− 𝟓𝒙 + 𝟒) = 𝟎
𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝒘𝒉𝒆𝒏 𝒚 = 𝒙 +
𝟏
𝒙
=
𝟗
𝟒
𝟒𝒙𝟐
− 𝟗𝒙 + 𝟒 = 𝟎
𝒙 =
−𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄
𝟐𝒂
𝐚 = 𝟒
𝒃 = −𝟗
𝐜 = 𝟒
𝒙 =
−𝟗 ± 𝟗𝟐 − 𝟒 𝟒 𝟒
𝟐 𝟒
𝒙 =
−𝟗 ± 𝟏𝟕
𝟖
𝒘𝒉𝒆𝒏 𝒚 = 𝒙 +
𝟏
𝒙
= −𝟏 𝒊𝒏𝒗𝒂𝒍𝒊𝒅
𝒙 = − 𝟏
𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
𝟔. 𝟏𝟎𝒙𝟓 − 𝟏𝟏𝒙𝟒 − 𝟑𝟗𝒙𝟑 + 𝟑𝟗𝒙𝟐 + 𝟏𝟏𝒙 − 𝟏𝟎
− 𝟑𝟗
𝟒
𝟑𝟗 𝟏𝟏 𝟏
𝟐
𝟏𝟎
𝟐𝟒
−𝟐𝟎
− 𝟑𝟖
𝟗
−𝟏𝟎
− 𝟔 − 𝟒𝟐
𝟏𝟎
𝟒
𝟏𝟎
𝟐𝟎
𝟏𝟎
− 𝟑𝟖 𝟐
𝟐𝟎
𝟏𝟎
𝟒𝟖
𝟓 − 𝟑 − 𝟐𝟏
𝟏𝟖 𝟏
− 𝟐𝟎
𝟏𝟎
− 𝟏𝟏
𝟏𝟎
𝟐𝟎
= 𝟐 𝒙 −
𝟏
𝟐
𝒙 − 𝟏 (𝒙 − 𝟐)(𝟓𝒙𝟐
+ 𝟏𝟐𝒙 + 𝟓)
𝒙 =
−𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄
𝟐𝒂
𝐚 = 𝟓
𝒃 = 𝟏𝟐
𝐜 = 𝟓
𝒙 =
−𝟏𝟐 ± 𝟏𝟐𝟐 − 𝟒 𝟓 𝟓
𝟐 𝟓
𝒙 =
−𝟔 ± 𝟏𝟏
𝟓

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  • 1. 𝒑𝒈 𝟏𝟎𝟑 − 𝟏𝟎𝟒 𝒃𝒊𝒒𝒖𝒂𝒅𝒓𝒂𝒕𝒊𝒄 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
  • 2. 𝒑𝒈 𝟏𝟎𝟓 𝒙 = 𝟒 𝒙 = − 𝟒 𝒙 = 𝟓 𝒙 = 𝟐 𝟑 𝒙 = − 𝟐 𝟑 𝒙 = 𝟏 + 𝟔 𝒙 = 𝟏 − 𝟔 𝒙 = 𝟏 𝟐 + 𝟐 𝟐 𝒙 = − 𝟓 𝒙 = 𝟑 𝟑 𝒙 = − 𝟑 𝟑 𝒙 = 𝟏 + 𝟕 𝒙 = 𝟏 − 𝟕 𝒙 = 𝟏 𝟐 − 𝟐 𝟐 𝒃𝒊𝒒𝒖𝒂𝒅𝒓𝒂𝒕𝒊𝒄 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
  • 3. 𝒑𝒈 𝟏𝟎𝟒 𝑳𝒆𝒕 𝒛 = 𝒙𝟐 − 𝟖𝒙 = 𝒛 + 𝟕 𝒛 + 𝟏𝟓 + 𝟏𝟓 = 𝒛𝟐 + 𝟕 + 𝟏𝟓 𝒛 + 𝟕 𝟏𝟓 + 𝟏𝟓 𝒙 = −𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄 𝟐𝒂 𝒎𝒆𝒕𝒉𝒐𝒅 𝒐𝒇 𝒄𝒉𝒂𝒏𝒈𝒊𝒏𝒈 𝒕𝒉𝒆 𝒗𝒂𝒓𝒊𝒂𝒃𝒍𝒆
  • 4. 𝒑𝒈 𝟏𝟎𝟓 𝒙 = 𝟐 𝒙 = −𝟕 𝒙 = 𝟓 𝟐 + 𝟐𝟗 𝟐 𝒙 = 𝟓 𝟐 − 𝟐𝟗 𝟐 𝒎𝒆𝒕𝒉𝒐𝒅 𝒐𝒇 𝒄𝒉𝒂𝒏𝒈𝒊𝒏𝒈 𝒕𝒉𝒆 𝒗𝒂𝒓𝒊𝒂𝒃𝒍𝒆
  • 5. 𝒑𝒈 𝟏𝟎𝟓 − 𝟏𝟎𝟖 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
  • 6. 𝒑𝒈 𝟏𝟎𝟖 − 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏
  • 8. 𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏 𝟐. 𝟔𝒙𝟒 + 𝒙𝟑 − 𝟓𝟖𝒙𝟐 + 𝒙 + 𝟔 = 𝟎 𝟔𝒙𝟐 + 𝒙 − 𝟓𝟖 + 𝟏 𝒙 + 𝟔 𝒙𝟐 = 𝟎 𝟔 𝒙𝟐 + 𝟏 𝒙𝟐 + 𝟏 𝒙 + 𝟏 𝒙 − 𝟓𝟖 = 𝟎 𝑳𝒆𝒕 𝒚 = 𝒙 + 𝟏 𝒙 𝒙𝟐 + 𝟏 𝒙𝟐 = 𝒚𝟐 − 𝟐 𝟔 𝒚𝟐 − 𝟐 + 𝒚 − 𝟓𝟖 = 𝟎 𝟔𝒚𝟐 − 𝟏𝟐 + 𝐲 − 𝟓𝟖 = 𝟎 𝟔𝒚𝟐 + 𝐲 − 𝟕𝟎 = 𝟎 (𝟑𝐲 − 𝟏𝟎)(𝟐𝒚 + 𝟕) = 𝟎 𝒚 = 𝟏𝟎 𝟑 𝒚 = − 𝟕 𝟐 𝒘𝒉𝒆𝒏 𝒚 = 𝒙 + 𝟏 𝒙 = 𝟏𝟎 𝟑 𝟑𝒙𝟐 − 𝟏𝟎𝒙 + 𝟑 = 𝟎 (𝟑𝒙 − 𝟏)(𝒙 − 𝟑) = 𝟎 𝒙 = 𝟏 𝟑 𝒙 = 𝟑 𝒘𝒉𝒆𝒏 𝒚 = 𝒙 + 𝟏 𝒙 = − 𝟕 𝟐 𝟐𝒙𝟐 + 𝟕𝒙 + 𝟐 = 𝟎 𝒙 = −𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄 𝟐𝒂 𝐚 = 𝟐 𝒃 = 𝟕 𝐜 = 𝟐 𝒙 = −𝟕 ± 𝟕𝟐 − 𝟒 𝟐 𝟐 𝟐 𝟐 𝒙 = −𝟕 ± 𝟑𝟑 𝟒
  • 9. 𝟓. 𝟒𝒙𝟓 − 𝒙𝟒 − 𝟔𝒙𝟑 − 𝟔𝒙𝟐 − 𝒙 + 𝟒 = 𝟎 𝟒𝒙𝟐 − 𝟓𝒙 − 𝟏 − 𝟓 𝒙 + 𝟒 𝒙𝟐 = 𝟎 𝟒 𝒙𝟐 + 𝟏 𝒙𝟐 − 𝟓 𝒙 + 𝟏 𝒙 − 𝟏 = 𝟎 𝑳𝒆𝒕 𝒚 = 𝒙 + 𝟏 𝒙 𝒙𝟐 + 𝟏 𝒙𝟐 = 𝒚𝟐 − 𝟐 𝟒 𝒚𝟐 − 𝟐 − 𝟓𝒚 − 𝟏 = 𝟎 𝟒𝒚𝟐 − 𝟖 + 𝟓𝐲 − 𝟏 = 𝟎 𝟒𝒚𝟐 + 𝟓𝐲 − 𝟗 = 𝟎 (𝟒𝐲 − 𝟗)(𝒚 + 𝟏) = 𝟎 𝒚 = 𝟗 𝟒 𝒚 = −𝟏 − 𝟔 − 𝟏 𝟒 𝟒 − 𝟒 − 𝟓 − 𝟏 𝟒 − 𝟒 𝟓 𝟓 𝟒 − 𝟏 − 𝟏 − 𝟔 − 𝟓 𝟏 (𝒙 − 𝟏)(𝟒𝒙𝟒 − 𝟓𝒙𝟑 − 𝒙𝟐 − 𝟓𝒙 + 𝟒) = 𝟎 𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏 𝒘𝒉𝒆𝒏 𝒚 = 𝒙 + 𝟏 𝒙 = 𝟗 𝟒 𝟒𝒙𝟐 − 𝟗𝒙 + 𝟒 = 𝟎 𝒙 = −𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄 𝟐𝒂 𝐚 = 𝟒 𝒃 = −𝟗 𝐜 = 𝟒 𝒙 = −𝟗 ± 𝟗𝟐 − 𝟒 𝟒 𝟒 𝟐 𝟒 𝒙 = −𝟗 ± 𝟏𝟕 𝟖 𝒘𝒉𝒆𝒏 𝒚 = 𝒙 + 𝟏 𝒙 = −𝟏 𝒊𝒏𝒗𝒂𝒍𝒊𝒅 𝒙 = − 𝟏
  • 10. 𝒑𝒈 𝟏𝟎𝟗 𝒓𝒆𝒄𝒊𝒑𝒓𝒐𝒄𝒂𝒍 𝒆𝒒𝒖𝒂𝒕𝒊𝒐𝒏 𝟔. 𝟏𝟎𝒙𝟓 − 𝟏𝟏𝒙𝟒 − 𝟑𝟗𝒙𝟑 + 𝟑𝟗𝒙𝟐 + 𝟏𝟏𝒙 − 𝟏𝟎 − 𝟑𝟗 𝟒 𝟑𝟗 𝟏𝟏 𝟏 𝟐 𝟏𝟎 𝟐𝟒 −𝟐𝟎 − 𝟑𝟖 𝟗 −𝟏𝟎 − 𝟔 − 𝟒𝟐 𝟏𝟎 𝟒 𝟏𝟎 𝟐𝟎 𝟏𝟎 − 𝟑𝟖 𝟐 𝟐𝟎 𝟏𝟎 𝟒𝟖 𝟓 − 𝟑 − 𝟐𝟏 𝟏𝟖 𝟏 − 𝟐𝟎 𝟏𝟎 − 𝟏𝟏 𝟏𝟎 𝟐𝟎 = 𝟐 𝒙 − 𝟏 𝟐 𝒙 − 𝟏 (𝒙 − 𝟐)(𝟓𝒙𝟐 + 𝟏𝟐𝒙 + 𝟓) 𝒙 = −𝒃 ± 𝒃𝟐 − 𝟒𝒂𝒄 𝟐𝒂 𝐚 = 𝟓 𝒃 = 𝟏𝟐 𝐜 = 𝟓 𝒙 = −𝟏𝟐 ± 𝟏𝟐𝟐 − 𝟒 𝟓 𝟓 𝟐 𝟓 𝒙 = −𝟔 ± 𝟏𝟏 𝟓

Notas del editor

  1. 解集= solution set
  2. 解集= solution set