2x^2-12xy+18y^2 因式分解
问题描述:
2x^2-12xy+18y^2 因式分解
答
2x^2-12xy+18y^2
=2(x^2-6xy+9y^2)
=2(x-3y)^2(x^2+1)^2-4x^2(x^2+1)^2-4x^2=(X^2+1+2X)(X^2+1-2X)=(x+1)^2(x-1)^2