解方程(1)x²-36=0(2)(x+1)²-25=0(3)(x-2)²-1=0(4)(2x-1)²-x²=0
问题描述:
解方程(1)x²-36=0(2)(x+1)²-25=0(3)(x-2)²-1=0(4)(2x-1)²-x²=0
答
(1)x²=36
x=6 or -6
(2)(x+1)²=25
(x+1)=±5
x=4 or -6
(3)(x-2)²=1
(x-2)=±1
x=3 or 1
(4)(2x-1)²=x²
4X^2-4x+1-x^2=0
3X^2-4X+1=0
(3x-1)(x-1)=0
x=1/3 or 1