①(x-1)²-4=21
(x-1)²=25
x-1=±5
∴x₁=6
x₂=-4
②(x-0.6)³=0.064
x-0.6=0.4
x=1
③-100(x-1)²=(-4)³
-100(x-1)²=-64
(x-1)²=64/100
x-1=±8/10
∴x₁=1/5
x₂=9/5
解方程：①(x-1)²-4=21②(x-0.6)³=0.064③-100(x-1)²=(-4)³
解方程：①(x-1)²-4=21②(x-0.6)³=0.064③-100(x-1)²=(-4)³
數(shù)學(xué)人氣：836 ℃時(shí)間：2020-05-24 09:24:01
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