Question

Разложите на множители многочлен

1)na+nb+5a+5b

2)7x-7y+bx-by

 

 

Answer 1

$1)na+nb+5a+5b=n(a+b)+5(a+b)=(a+b)(n+5)\2)7x-7y+bx-by=7(x-y)+b(x-y)=(x-y)(7+b)$

Answer 2

1)na+nb+5a+5b=n(a+b)+5(a+b) = (n+5)(a+b)

2)7x-7y+bx-by = 7(x-y) + b(x-y)=(7+b)(x-y)