Question

3a(a+b)-5(a+b) (2a+b)(2a-3b)+a(2a+b) (3x+y)平方-(3x+y) 5a平方x+1

Answer 1

你求什么?分解因式吗?

①3a(a+b)-5(a+b)

=(a+b)(3a-5)

②(2a+b)(2a-3b)+a(2a+b)

=(2a+b)(2a-3b+a)

=(2a+b)(3a-3b)

=3(2a+b)(3a-3b)

③(3x+y)²-(3x+y)

=(3x+y)(3x+y-1)

④5a²x+10ay-25a³xy

=5a(ax+2y-5a²xy)

⑤6x³y²-3x²y²+12x²y³

=3x²y²(x-1+2y)