Question

15. Calculaţi:
a) (x + 1)(x + 2);
c) (2x-3)(1-x);
16. Calculaţi:
b) (x-1)(x+2);
d) (3x + 1)(2x-3).

Answer 1

15.a) (x+1)(x+2)= x la 2 + 2x+x+2
=x la2 +3x+2
c). (2x-3)(1-x)=
2x-2x la 2 -3+x= x-2x la 2 -3

desfaci parantelezele si imultesti cu fiecare
sper ca ai inteles!!!!!