Question

数学高手请帮忙解答因式分解练习题！

5x5-15x3y-20xy2
翻译：5x的5次方减15x的三次方y减20xy的平方
3a2b2-17abxy+10x2y2
那些2就是平方大家应该能看懂吧！

Answer 1

5x5-15x3y-20xy2
=5x(x^4-3x²y-4y²)
=5x(x²-4y)(x²+y)

3a2b2-17abxy+10x2y2
=(3ab-2xy)(ab-5xy)

Answer 2

5x5-15x3y-20xy2

=5x(x⁴－3x²y－4y²)
=5x(x²＋y)(x²－4y)

3a2b2-17abxy+10x2y2

=3(ab)²－17abxy＋(10xy)²
=(ab－5xy)(3ab－2xy)

不懂还可问，满意请及时采纳！o(∩_∩)o

Answer 3

5x^5-15x^3y-20xy^2
=5x(x^4-3x^2y-4y^2)
=5x(x^2-4y)(x^2+y)

3a^2b^2-17abxy+10x^2y^2
=(ab-5xy)(3ab-2xy)

Answer 4

1。提取公因式5x 即5x(x4-3x2y-4y2)=5x(x2+y)(x2-4y)
2.(3ab-2xy)(ab-5xy)
这两题的共同点就是把将简单的因式分解中的x,y变换成x2, ，xy, ab等
看不懂再问我

Answer 5

5xˆ5-15xˆ3y-20xyˆ2
=5x（xˆ4-3xˆ2y-4yˆ2）
=5x（xˆ2-4y）（xˆ2+y）
3aˆ2bˆ2-17abxy+10xˆ2yˆ2
=（3ab-2xy）（ab-5xy）

Answer 6

5x(X^4-3x^2y-4y^2)=5x(x^2-4y)(x^2+y)

(3ab-2xy)(ab-5xy)
要好好学习哦，希望能够帮助你！