Question

5 Scrieti ca produs următoarele expresii:
a) x(x + 4) + 3(x + 4);
b) 2x(x +13) - 5(x + 13);
c) (x + 6)(x-3) + (x + 6)(x + 5).​

Answer 1

a) x(x+4)+3(x+4)=(x+4)(x+3)

b) 2x(x+13)-5(x+13)=(x+13)(2x-5)

c) (x+6)(x-3)+(x+6)(x+5)=(x+6)(x-3+x+5)=(x+6)(2x+2)

Answer 2

Explicație pas cu pas:

a) (x+4)(x+3)

b) (x+13)(2x-5)

c) (x+6)(x-3+x+5)=(x+6)(2x+2)=2(x+6)(x+1)