Answer:
x = 13
Step-by-step explanation:

Take the square root of both sides

Answer:
(3, -3) is correct
Step-by-step explanation:
-4 × 3 = -12. -12 + 9 = -3
Answer:

Step-by-step explanation:
The given equation is 
Group similar terms to get:


Square both sides to obtain:


Add 6 to both sides

Simplify the right hand side to obtain;

Answer:
x=25/64
Step-by-step explanation:
by simple substitution