(x^2+3x)^2-2(x^2+3x)-8分解因式a^2+b^2-2ab-2b+2a+1=
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(x^2+3x)^2-2(x^2+3x)-8分解因式a^2+b^2-2ab-2b+2a+1=(x^2+3x)^2-2(x^2+3x)-8分解因式a^2+b^2-2ab-2b+2a+1=(x^2+3x)
(x^2+3x)^2-2(x^2+3x)-8分解因式a^2+b^2-2ab-2b+2a+1=
(x^2+3x)^2-2(x^2+3x)-8分解因式
a^2+b^2-2ab-2b+2a+1=
(x^2+3x)^2-2(x^2+3x)-8分解因式a^2+b^2-2ab-2b+2a+1=
(x^2+3x)^2-2(x^2+3x)-8
=(x^2+3x-4)(x^2+3x+2)
=(x+4)(x-1)(x+1)(x+2)
a^2+b^2-2ab-2b+2a+1
=(a-b)^2+2(a-b)+1
=(a-b+1)^2
(x^2+3x)^2-2(x^2+3x)-8
=(x²+3x-4)(x²+3x+2)
=(x+4)(x-1)(x+1)(x+2)
a^2+b^2-2ab-2b+2a+1=(a-b)²-2(a-b)+1
=(a-b+1)²
(x²+3x)²-2(x²+3x)-8
=(x²+3x+2)(x²+3x-4)
=(x+1)(x+2)(x+4)(x-1)
a²+b²-2ab-2b+2a+1
=(a-b)²+2(a-b)+1
=(a-b+1)²
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