求下列各式中x的值
1、x^3-3=8分之32.(x-1）^3=83.x^2=254、X^2-81=05.25x^2=36...
1、x^3-3=8分之3 2. (x-1）^3=8 3.x^2=25 4、X^2-81=0 5.25x^2=36
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1、x^3-3=8分之3
解：x³=27/8
x=3/2
2. (x-1）^3=8
解：x-1=2
x=3
3.x^2=25
解：x=±5
4、X^2-81=0
解：x²=81
x=±9
5.25x^2=36
解：x²=36/25
x=±6/5
解：x³=27/8
x=3/2
2. (x-1）^3=8
解：x-1=2
x=3
3.x^2=25
解：x=±5
4、X^2-81=0
解：x²=81
x=±9
5.25x^2=36
解：x²=36/25
x=±6/5
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1、
x³ - 3 = 3/8
x³ = 3/8 + 3 = 27/8 = (3/2)³
x = 3/2
2.
(x-1)³ = 8 = 2³
x-1 = 2
x = 3
3.
x² = 25 = 5²
x = ±5
4.
x² - 81 = 0
x² = 81 = 9²
x = ±9
5.
25x² = 36
x² = 36/25 = (6/5)²
x = ±6/5
x³ - 3 = 3/8
x³ = 3/8 + 3 = 27/8 = (3/2)³
x = 3/2
2.
(x-1)³ = 8 = 2³
x-1 = 2
x = 3
3.
x² = 25 = 5²
x = ±5
4.
x² - 81 = 0
x² = 81 = 9²
x = ±9
5.
25x² = 36
x² = 36/25 = (6/5)²
x = ±6/5
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