8,a^4 x^2 - a^4 y^2 9,4x^3 -4x^2 + x10,x^2-a^2-4x+4a 11,a^2(x-3)+a(3-x)以上为多项式分解因式:另补一题7,4a^2-16
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8,a^4 x^2 - a^4 y^2 9,4x^3 -4x^2 + x10,x^2-a^2-4x+4a 11,a^2(x-3)+a(3-x)以上为多项式分解因式:另补一题7,4a^2-16
8,a^4 x^2 - a^4 y^2 9,4x^3 -4x^2 + x
10,x^2-a^2-4x+4a 11,a^2(x-3)+a(3-x)
以上为多项式分解因式:另补一题7,4a^2-16
8,a^4 x^2 - a^4 y^2 9,4x^3 -4x^2 + x10,x^2-a^2-4x+4a 11,a^2(x-3)+a(3-x)以上为多项式分解因式:另补一题7,4a^2-16
(a^2 x - a^2 y)(a^2 x+ a^2 y)
7题(2a +4)(2a-4)
10题x^2-a^2-4x+4a =x^2-a^2-4x+4a +4-4=x^2-4x+4-(a^2-4a+4)=(x-2)^2-(a_2)^2=(x-2+a-2)(x-2-a+2)=(x-a-4)(x-a)
(8),a^4 x^2 - a^4 y^2
=a^4(x^2-y^2)
=a^4(x+y)(x-y)
(9),4x^3 -4x^2 + x
=x(4x^2-4x+1)
=x(2x-1)^2
(10),x^2-a^2-4x+4a
=(x^2-4x+4)-(a^2-4a+4)
=(x-2)^2-(a-2)^2
=(x-2+a-...
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(8),a^4 x^2 - a^4 y^2
=a^4(x^2-y^2)
=a^4(x+y)(x-y)
(9),4x^3 -4x^2 + x
=x(4x^2-4x+1)
=x(2x-1)^2
(10),x^2-a^2-4x+4a
=(x^2-4x+4)-(a^2-4a+4)
=(x-2)^2-(a-2)^2
=(x-2+a-2)(x-2-a+2)
=(x+a-4)(x-a)
(11),a^2(x-3)+a(3-x)
=a^2(x-3)-a(x-3)
=a(x-3)(a-1)
(7),4a^2-16
=4(a^2-4)
=4(a+2)(a-2)
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