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Simplifying
8 = -2A2 + 16
Reorder the terms:
8 = 16 + -2A2
Solving
8 = 16 + -2A2
Solving for variable 'A'.
Move all terms containing A to the left, all other terms to the right.
Add '2A2' to each side of the equation.
8 + 2A2 = 16 + -2A2 + 2A2
Combine like terms: -2A2 + 2A2 = 0
8 + 2A2 = 16 + 0
8 + 2A2 = 16
Add '-8' to each side of the equation.
8 + -8 + 2A2 = 16 + -8
Combine like terms: 8 + -8 = 0
0 + 2A2 = 16 + -8
2A2 = 16 + -8
Combine like terms: 16 + -8 = 8
2A2 = 8
Divide each side by '2'.
A2 = 4
Simplifying
A2 = 4
Take the square root of each side:
A = {-2, 2}
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