Question

Решите уровнение:
(2х+3)(3х+1)-10=11х+20

Answer 1

(2x+3)(3x+1)=6x2+2x+9x+3=6x2+11x+3
6x2+11x+3-10=11x+20
6x2+11x-11x=20-3+10
6x2=27
x2=4.5
x=2.12