1
(x+1)(x-6)=8
x^2-6x+x-6-8=0
x^2-5x-14=0
(x-7)(x+2)=0
解得x=7,-2
2
25(x-2)^2=16(x+4)^2
化简得3X^2-76X-52=0
(X-26)(3X+2)=0
解得X=26,-2/3
还可以这样做
5^2(x-2)^2=4^2(x+4)^2
5*(X-2)=正负4*(X+4)
答案一样的.