Question 183495
x(x+2)=x+(x+2)+23
x^2+2x=2x+2+23
x^2+2x-2x-25=0
x^2-25=0
(x-5)(x+5)=0
x-5=0
x=5 ans.
x+2=7 ans.
Proof:
5*7=5+7=23
35=12+23
35=35