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Simplifying
4a2 + -4 = 192
Reorder the terms:
-4 + 4a2 = 192
Solving
-4 + 4a2 = 192
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + 4a2 = 192 + 4
Combine like terms: -4 + 4 = 0
0 + 4a2 = 192 + 4
4a2 = 192 + 4
Combine like terms: 192 + 4 = 196
4a2 = 196
Divide each side by '4'.
a2 = 49
Simplifying
a2 = 49
Take the square root of each side:
a = {-7, 7}
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