Question

(x平方-x)平方-4(2x平方-2x-3)=0求解..

Answer 1

(x²-x)²-4(2x²-2x)+12=0

(x²-x)²-8(x²-x)+12=0

(x²-x-6)(x²-x-2)=0

(x-3)(x+2)(x-2)(x+1)=0

∴x=3 x=-2 x=2 x=-1