Question

解方程：①(x-1)²-4=21②(x-0.6)³=0.064③-100(x-1)²=(-4)³ 求过程~

Answer 1

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

Answer 2

①解：(x-1)²-4=21

(x-1)²=25

x－1=±5
x=1±5
所以x1=6 x2=﹣4
②解：(x-0.6)³=0.064

x-0.6=₃√0.064

x－0·6=0·4
x=1

③解：-100(x-1)²=(-4)³

-100(x-1)²=﹣64

100(x-1)²=64

(x-1)²=64／100

x－1=±4／5
x=1±4／5

x1=9／5 x2=1／5

不懂的还可以追问！满意请及时采纳！ O(∩_∩)O

Answer 3

①(x-1)²=25 x-1的绝对值为5，x=6或-4
②x-0.6=0.8 x=1.4
③(x-1)²=0.64 x-1的绝对值为0.8，x=1.8或0.2
还满意吗

Answer 4

1. (x-1)2=25     x-1=5     x=6     或x-1=-5  x=-4

2. (x-0.6)=0.4   x=1

3. (x-1)2=0.64   x-1=0.8   x=1.8  或x-1=-0.8 x=0.2