Question

Genteeeee
por favor me ajudem

(x+2)² = (4x - 5)²

respondam por favor : (

Answer 1

x² +4x +4 = 16x² -40x +25

15x² -44x +21 = 0

$\boxed{\mathsf{\Delta=b^2-4ac}}$

(-44)² -4 * 15 * 21

1936 -1260

676 = 26²

$\boxed{\mathsf{x=\frac{-b\pm\sqrt{\Delta}}{2a}}}}$

[ -(-44) ± √26² ]/(2 * 15)

[22 ± 13]/15

x' = 35/15 → 7/3

x'' = 9/15 → 3/5

{7/3 , 3/5}