Question

Решите уравнение: (5х2 – 3) – (2x + 5) = 5х2​

Answer 1

(5х²-3)-(2х+5)=5х²

5х²-3-2х-5=5х²

5х²-3-2х-5-5х²=0

-3-2х-5=0

2х=-8

х=-4

Answer 2

$5x^{2} - 3 - 2x - 5 = 5x^{2} \\ 5x^{2} - 2x - 5x^{2} = 3 + 5 \\ - 2x = 8 \\ x = - 4$