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
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![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](/uploads/image/z/698797-37-7.jpg?t=16-%EF%BC%882a%2B36%EF%BC%89%5E2-36x%5E2%2B12xy-y%5E24x%28a-b%29-8y%28b-a%29%EF%BC%88x%5E2-5%EF%BC%89%5E2%2B8%28x%5E2-5%29%2B16%E8%BF%98%E6%9C%89%E4%B8%A4%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%982x%5E2y%C3%97%EF%BC%88-8y%5E2%EF%BC%89%2B4x%5Ey%C3%975y%5E22%EF%BC%88x%2B5%EF%BC%89%28x-4%29-3%28X-6%EF%BC%89%EF%BC%88X%2B1%EF%BC%89%E7%BB%99%E6%88%91%E4%B8%80%E4%BA%9B%E6%AD%A5%E9%AA%A4)
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
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
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
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^y-16x^2y)y^2
=4y^2x^y(5-4x^y)
2(x+5)(x-4)-3(X-6)(X+1)
=2(x^2+x-20)-3(x^2-5x-6)
=-x^2+17x-22?
=(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