Question

3х в квадрати-2(х+5)=2х в квадрати+14

Answer 1

9-2(X+5)=4+14
9-2(X+5)=18
7(x+5)= 18
х+5=18÷7
х+5=2.5.......
X=5-2.5.....
x=2.5....====