Ответ:
1) x(x+4)+5(4+x)=(x+4)(x+5)
2) x(x-3)+2(3-x)=x(x-3)-2(x-3)=(x-3)(x-2)
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Ответ:
1) x(x+4)+5(4+x)=(x+4)(x+5)
2) x(x-3)+2(3-x)=x(x-3)-2(x-3)=(x-3)(x-2)