Question

Efectueaza toate calculele si scrie termenii obisnuiti in ordinea puterilor descrescatoare ale lui x.
a) (x+2)(x+3)
b) (x-2)(x-3)
c) (6x-1)(3x-3)

Answer 1

a) (x+2)(x+3)=x²+2x+3x+6=x²+5x+6

b) (x-2)(x-3)=x²-2x-3x+6=x²-5x+6

c) (6x-1)(3x-3) =18x²-3x-18x+3=18x²-21x+3

Answer 2

a) (x+2)(x+3)= x²+ 3x+ 2x+ 6
                     = x²+ 5x+ 6

b) (x-2)(x-3)= x²- 3x-3x+ 6
                   = x²-5x+ 6

c) (6x-1)(3x-3)=18x²-18x-3x+ 3
                      =18x²- 21x+ 3