16-(2a+36)^2-36x^2+12xy-y^24x(a-b)-8y(b-a)(x^2-5)^2+8(x^2-5)+16还有两道计算题2x^2y×(-8y^2)+4x^y×5y^22(x+5)(x-4)-3(X-6)(X+1)给我一些步骤

问题描述:

16-(2a+36)^2
-36x^2+12xy-y^2
4x(a-b)-8y(b-a)
(x^2-5)^2+8(x^2-5)+16
还有两道计算题
2x^2y×(-8y^2)+4x^y×5y^2
2(x+5)(x-4)-3(X-6)(X+1)
给我一些步骤

=(4+2a+36)(4-2a-36)=(2a+40)(-2a-32)=-4(a+20)(a+16)
=-(6x-y)^2
=(a-b)(4x+8y)=4(a-b)(x+2y)
=(x^2-5+4)^2=[(x-1)(x-4)]^2

16-(2a+36)^2=(4-2a-36)(4+2a+36)=(-2a-32)(2a+40)=-4(a+16)(a+20)-36x^2+12xy-y^2=(-6x+y)(6x-y)4x(a-b)-8y(b-a)=4(a-b)(x+2y)(x^2-5)^2+8(x^2-5)+16=(x^2-1)^2还有两道计算题2x^2y×(-8y^2)+4x^y×5y^2=(20x...