因式分解法:2(x-3)²+(3x-x²)=0
问题描述:
因式分解法:2(x-3)²+(3x-x²)=0
答
2(x-3)²+(3x-x²)=0
2x^2-12x+18+3x-x^2=0
x^2-9x+18=0
(x-3)(x-6)=0
x=3或x=6