Question

(2 ori x plus 3)ori(2 ori x plus 4)=56​

Answer 1

Răspuns:

(2x+3)*(2x+4)=56

4x^2+8x+6x+12=56

4x^2+14x-44=0

Delta=b^2-4ac=14^2-4*4*(-44)

=196+704=900

X1=(-b-rad delta) /2a=(-14-30)/8=-44/8=-22/4

X2=(-b+rad delta) /2a=(-14+30)/8=16/8=2