25(1-X)平方等于36,求x等于几
问题描述:
25(1-X)平方等于36,求x等于几
答
25(1-X)^2=36
(1-x)^2=36/25
1-x=正负 6/5
x1=1+6/5=11/5
x2=1-6/5=-1/5