Question

(-2x-1). (X-2)=3x+5=x² ajuda pfvr

Answer 1

(-2x-1). (X-2)= -2x^2 - 4x - 1x +2 = -2x^2 -5x +2

-2x^2 -5x +2=3x+5
-2x^2 -5x -3x = 5 -2
-2x^2 -8x= 3 

-2x^2 -8x= 3 =x^2
-2x^2 - x^2 -8x = 3
-3x^2 - 8x =3 (-1)
3x^2 +8x = -3
3x^2 +8x +3 =0

$({-b +- \sqrt{ b^{2}-4.a.c}})/({2.a})$

só resolver bhaskara