positive: 题目<br>答案解析<br>查看更多优质解析<br>举报<br>把一个32写成几个质因数的乘积的形式:32=2×2×2×2×2;<br>故答案为:32=2×2×2×2×2.<br>把一个合数写成几个质因数的乘积的形式,叫分解质因数,由此即可解决.<br>本题考点:合数分解质因数.<br>考点点评:此题考查了分解质因数的方法.<br>解析看不懂?求助智能家教解答<br>查看解答
negative: 分解因式:(a-b)(x-y)-(b-a)(x+y)分解因式:(a-b)(x-y)-(b-a)(x+y)分解因式:(a-b)(x-y)-(b-a)(x+y)(a-b)(x-y)-(b-a)(x+y)=<br>分解因式:(a-b)(x-y)-(b-a)(x+y)<br>分解因式:(a-b)(x-y)-(b-a)(x+y)<br>分解因式:(a-b)(x-y)-(b-a)(x+y)<br>(a-b)(x-y)-(b-a)(x+y)<br>=(a-b)(x-y)+(a-b)(x+y)<br>[提取公因式]<br>=(a-b)(x-y+x+y)<br>=2x(a-b)<br>(a-b)(x-y)-(b-a)(x+y)<br>=(a-b)(x-y)+(a-b)(x+y)<br>=(a-b)(x-y+x+y)<br>=(a-b)(2x)<br>=2x(a-b)<br>=(a-b)(x-y)+(a-b)(x+y)<br>=(a-b)(2x)<br>=(a-b)(x-y+x=y)<br>=(a-b)2x<br>=2ax-2bx<br>2x(a-b)<br>解:(a-b)(x-y)-(b-a)(x+y)<br>=a(x-y)-b(x-y)-b(x+y)-a(x+y)<br>=ax-ay-bx+by-bx-by-ax-ay<br>=a(x-y-x-y)-b(x-y+x+y)<br>=-2ay-2bx<br>=-2(ay+bx)