Answer:
Let's simplify and solve for a.
Starting with the given equation:
4a²-2=a²+25
Subtracting a² from both sides:
3a²-2=25
Adding 2 to both sides:
3a²=27
Dividing both sides by 3:
a²=9
Taking the square root of both sides:
a=±3
So the value of a could be either 3 or -3.
Explanation: