Объяснение:
1) 2а+2b+xa+xb=2(a+b)+x(a+b)=(a+b)(2+x)
2) ka-kb-5a+5b= k(a-b)-5(a-b)=(a-b)(k-5)
3) 7am-7m+5ax-5x=7m(a-1)+5x(a-1)=(a-1)(7m+5x)
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Объяснение:
1) 2а+2b+xa+xb=2(a+b)+x(a+b)=(a+b)(2+x)
2) ka-kb-5a+5b= k(a-b)-5(a-b)=(a-b)(k-5)
3) 7am-7m+5ax-5x=7m(a-1)+5x(a-1)=(a-1)(7m+5x)