分解因式 2a+2a^2+4a^3(x+y)^2-2x-2y+1(x^2+y^2-1)^2-4x^2y^2^2 是平方^?
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2a+2a^2+4a^3
=2a(2a²+a+1)
(x+y)^2-2x-2y+1
=(x+y)²-2(x+y)+1
=(x+y-1)²
(x^2+y^2-1)^2-4x^2y^2
=(x²+y²-1+2xy)(x²+y²-1-2xy)
=[(x+y)²-1)][(x-y)²-1]
=(x+y+1)(x+y-1)(x-y+1)(x-y-1),5,2a+2a^2+4a^3=2a(2a^2+a+1)
(x+y)^2-2x-2y+1=(x+y-1)^2
(x^2+y^2-1)^2-4x^2y^2,2,1, a的平方(a-1)+(a-5)(a+7) =a 3;-a 2;+a 2;+7a-5a-35 =a 3;+2a-35; 2, 5(x+y)和的平方-125m的平方 =5(x+y) 2;,2,分解因式
2a+2a^2+4a^3
(x+y)^2-2x-2y+1
(x^2+y^2-1)^2-4x^2y^2
^2 是平方
^3是三次方
=2a(2a²+a+1)
(x+y)^2-2x-2y+1
=(x+y)²-2(x+y)+1
=(x+y-1)²
(x^2+y^2-1)^2-4x^2y^2
=(x²+y²-1+2xy)(x²+y²-1-2xy)
=[(x+y)²-1)][(x-y)²-1]
=(x+y+1)(x+y-1)(x-y+1)(x-y-1),5,2a+2a^2+4a^3=2a(2a^2+a+1)
(x+y)^2-2x-2y+1=(x+y-1)^2
(x^2+y^2-1)^2-4x^2y^2,2,1, a的平方(a-1)+(a-5)(a+7) =a 3;-a 2;+a 2;+7a-5a-35 =a 3;+2a-35; 2, 5(x+y)和的平方-125m的平方 =5(x+y) 2;,2,分解因式
2a+2a^2+4a^3
(x+y)^2-2x-2y+1
(x^2+y^2-1)^2-4x^2y^2
^2 是平方
^3是三次方
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