分解因式:4x^2-8x+5-3x^2+6x-2(2x^2-0.5+3x)-4(-x^2+x+0.5)-5x(2x^2-3x+4)(x-y)(x^2+xy+y^2)化简:[(x^2+10x+4)(x^2+10x-2)-55]\x^2+10x-7能答多少答多少,最好今天完成,(x^2是x的平方的意思)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 09:22:26
![分解因式:4x^2-8x+5-3x^2+6x-2(2x^2-0.5+3x)-4(-x^2+x+0.5)-5x(2x^2-3x+4)(x-y)(x^2+xy+y^2)化简:[(x^2+10x+4)(x^2+10x-2)-55]\x^2+10x-7能答多少答多少,最好今天完成,(x^2是x的平方的意思)](/uploads/image/z/1746696-48-6.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A4x%5E2-8x%2B5-3x%5E2%2B6x-2%282x%5E2-0.5%2B3x%29-4%28-x%5E2%2Bx%2B0.5%29-5x%282x%5E2-3x%2B4%29%28x-y%29%28x%5E2%2Bxy%2By%5E2%29%E5%8C%96%E7%AE%80%EF%BC%9A%5B%28x%5E2%2B10x%2B4%29%28x%5E2%2B10x-2%29-55%5D%5Cx%5E2%2B10x-7%E8%83%BD%E7%AD%94%E5%A4%9A%E5%B0%91%E7%AD%94%E5%A4%9A%E5%B0%91%EF%BC%8C%E6%9C%80%E5%A5%BD%E4%BB%8A%E5%A4%A9%E5%AE%8C%E6%88%90%EF%BC%8C%28x%5E2%E6%98%AFx%E7%9A%84%E5%B9%B3%E6%96%B9%E7%9A%84%E6%84%8F%E6%80%9D%29)
分解因式:4x^2-8x+5-3x^2+6x-2(2x^2-0.5+3x)-4(-x^2+x+0.5)-5x(2x^2-3x+4)(x-y)(x^2+xy+y^2)化简:[(x^2+10x+4)(x^2+10x-2)-55]\x^2+10x-7能答多少答多少,最好今天完成,(x^2是x的平方的意思)
分解因式:
4x^2-8x+5-3x^2+6x-2
(2x^2-0.5+3x)-4(-x^2+x+0.5)
-5x(2x^2-3x+4)
(x-y)(x^2+xy+y^2)
化简:
[(x^2+10x+4)(x^2+10x-2)-55]\x^2+10x-7
能答多少答多少,最好今天完成,(x^2是x的平方的意思)
分解因式:4x^2-8x+5-3x^2+6x-2(2x^2-0.5+3x)-4(-x^2+x+0.5)-5x(2x^2-3x+4)(x-y)(x^2+xy+y^2)化简:[(x^2+10x+4)(x^2+10x-2)-55]\x^2+10x-7能答多少答多少,最好今天完成,(x^2是x的平方的意思)
分解因式:
4x^2-8x+5-3x^2+6x-2
=(4x^2-3x^2)+(6x-8x)+(5-2)
=(x^2-2x+1)+2
=(x-1)^2+2
(2x^2-0.5+3x)-4(-x^2+x+0.5)
=2x^2+4x^2+3x-4x-0.5-2
=6x^2-x-2.5
-5x(2x^2-3x+4)
=-10x^3+15x^2-20x
(x-y)(x^2+xy+y^2)
=(x-y)(x^2+xy-2xy+y^2)
=(x-y)[(x-y)^2+xy)]
=(x-y)^3+xy(x-y)
^这个符号是什么东东?
(x-y)(x^2+xy+y^2)
=x^3-y^3
你打规范点好不好