(5x²-3)-(2x+5)=5x²
5x²-3-(2x+5)=5x²
-3-2x-5=0
-8-2x=0
-2x=8
x=8÷(-2)
x= -4
(5х²-3)-(2х+5)=5х²
5х²-3-2х-5=5х²
5х²-5х²-2х=3+5
-2х=8
х=-4
(5x²-3)-(2x+5)=5x²
5x²-3-(2x+5)=5x²
-3-2x-5=0
-8-2x=0
-2x=8
x=8÷(-2)
x= -4
(5х²-3)-(2х+5)=5х²
5х²-3-2х-5=5х²
5х²-5х²-2х=3+5
-2х=8
х=-4