作业帮a3x3 + x3 - a3y3 -y3 x4- 4x3+ 4x2 - 9 (x+y)2 - 4(x+y) +4 (2+ y2 )(x2- xy+ y2) -2x2y2 几次方不会打.....就这样打了一下...
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a3x3 + x3 - a3y3 -y3 x4- 4x3+ 4x2 - 9 (x+y)2 - 4(x+y) +4 (2+ y2 )(x2- xy+ y2) -2x2y2 几次方不会打.....就这样打了一下...
a3x3 + x3 - a3y3 -y3
x4- 4x3+ 4x2 - 9
(x+y)2 - 4(x+y) +4
(2+ y2 )(x2- xy+ y2) -2x2y2
几次方不会打.....就这样打了一下...
a3x3 + x3 - a3y3 -y3 x4- 4x3+ 4x2 - 9 (x+y)2 - 4(x+y) +4 (2+ y2 )(x2- xy+ y2) -2x2y2 几次方不会打.....就这样打了一下...
a3x3 + x3 - a3y3 -y3
=a^3(x^3-y^3)+x^3-y^3
=(a^3+1)(x^3-y^3)
=(a+1)(a^-a+1)(x-y)(x^2+xy+y^2)
x4- 4x3+ 4x2 - 9
=x^2(x^2-4x+4)-9
=x^2(x-2)^2-9
=(x(x-2)+3)(x(x-2)-3)
=(x^2-2x+3)(x^2-2x-3)
=(x^2-2x+3)(x-3)(x+1)
(x+y)2 - 4(x+y) +4
=(x+y-2)^2
(2+ y2 )(x2- xy+ y2) -2x2y2
=2x^2-2xy+2y^2+x^2y^2-xy^3+y^4-2x^y^2
=2x^2-2xy+2y^2-x^2y^2-xy^3+y^4
此题不能分解,是不是题目有误
高一因式分解 ①x^3-3x 2 ②2x(l-2m)-y(l 3n) 2(3nx my) ③(x①x^3-3x 2 =x^3-1-3x 3 =(x-1)(x^2 x 1-3) =(x-1)(x
题呢