因式分解 x^2-y^2+x+1/4 a^n+2+a^n+1-6a^n 2x(a-b)-(b-a) 9(2a+3b)^2-4(3a-2b)^2

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因式分解 x^2-y^2+x+1/4 a^n+2+a^n+1-6a^n 2x(a-b)-(b-a) 9(2a+3b)^2-4(3a-2b)^2
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因式分解 x^2-y^2+x+1/4 a^n+2+a^n+1-6a^n 2x(a-b)-(b-a) 9(2a+3b)^2-4(3a-2b)^2
因式分解 x^2-y^2+x+1/4 a^n+2+a^n+1-6a^n 2x(a-b)-(b-a) 9(2a+3b)^2-4(3a-2b)^2

因式分解 x^2-y^2+x+1/4 a^n+2+a^n+1-6a^n 2x(a-b)-(b-a) 9(2a+3b)^2-4(3a-2b)^2
x^2-y^2+x+1/4=(x+1/2)^2-y^2=(x+1/2-y)(x+1/2+y);
a^n+2+a^n+1-6a^n=3-4a^n;
2x(a-b)-(b-a)=(a-b)(2x+1);
9(2a+3b)^2-4(3a-2b)^2=[3(2a+3b)-2(3a-2b)][3(2a+3b)+2(3a-2b)]=13b(12a+5b)