Question

69-5(x-2)la puterea 2=24

Answer 1

69-24=5(x-2)^2
45=5(x-2)^2
5(x-2)^2 =45
(X-2)^2=45/5
(x-2)^2=9
x-2=radical din 9
x-2= +/- 3
I) x-2=3 => x=3+2=5
II) x-2=-3 => x=-3+2=-1

Answer 2

69-5(x-2)^2=24
-5(x-2)^2=24-69
-5(x-2)^2=-45/:(-5)
(x-2)^2=9
x-2=+/-√9
x-2=+/-3
x-2=3=>x=5 și x-2=-3=>x=-1
S={(-1; 5)}