Question

X+x+7+x2+(x+7)2=30 решите пож-ста!

Answer 1

х+х+7+2х+2х+14=30
6х+7+14=30
6х=9
х=1,5
Ответ: 1,5

Answer 2

х+х+7+2х+2х+14=30
6х+21=30
6х+21-30=0
6х=-9
х=-9÷6
х=1.5