Question

Exercitiul 3, va rog muult

Answer 1

Răspuns:

Explicație pas cu pas:

a) (x+1)(x-5)+(x+1)=(x+1)(x-5+1)=(x+1)(x-4)

b) (x-2)(x+3)-2(x+3)=(x+3)(x-2-2)=(x+3)(x-4)

c) (x-4)(x+6)-3(x-4)=(x-4)(x+6-3)=(x-4)(x+3)

d) (x+5)(x+7)+6(x+7)=(x+7)(x+5+6)=(x+7)(x+11)