Question

Решите уравнение (-2х+5)(-4х-9)=0

Answer 1

(-2х+5)(-4х-9)=0-2x + 5 = 0 или -4x - 9 = 0
-2x = -5
x = -5/-2
x = 2.5
-4x - 9 = 0
-4x = 9
x = 9/-4
x = -2.25
Ответ 2.5 или -2.25

Answer 2

$(-2x+5)(-4x-9)=0\-2x+5=0\-2x=-5\x=2.5\ \-4x-9=0\-4x=9\x=-2.25$