Question

-8x^2y-2x^3-8xy^2因式分解

Answer 1

-8x^2 y-2x^3-8xy^2

=(-2x)(4xy+4y^2 )-2x^3

=(-2x)(4y^(2+) 4xy+x^2 )

=(-2x) (2y+x)^2

6a^2-a-9a^3

=-9a^3+6a^2-a

=a(-9a^2+6a-1)

=a(3a-1)(-3a+1)

(x-y)^2+12(x-y)+36

=(x-y+6)^2

25(x-y)^2-60(x-y)+36

=(5x-5y-6)^2

(x+y)^2-2(x^2-y^2)+(x-y)^2

=(x+y)^2-2(x+y)(x-y)+(x-y)^2

=[(x+y)-(x-y) ]^2

=(2y)^2

=4y^2