请给位大师帮忙做下这几道题:1.(x+y)(x+y)-2 2.(x²-x)²-14x²+14x+24
问题描述:
请给位大师帮忙做下这几道题:1.(x+y)(x+y)-2 2.(x²-x)²-14x²+14x+24
都是分解因式
答
1.(x+y)(x+y)-2
=x^2+2xy+y^2-2
2.(x2-x)2-14x2+14x+24
=x^4-2x^3+x^2-14x^2+14x+24
=x^4-2x^3-13x^2+14x+24