Answer:
x= 2 or x= -2
Step-by-step explanation:
3x² -9= 3
+9 on both sides:
3x²= 9 +3
Simplify:
3x²= 12
Divide by 3 on both sides:
x² =4
Square root both sides:
$56.86
Answer: n=3
Divide by - 2
(N+3) = 6
Subtract 3
N= 3