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Simplifying
9 + -2a2 = -173
Solving
9 + -2a2 = -173
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + -2a2 = -173 + -9
Combine like terms: 9 + -9 = 0
0 + -2a2 = -173 + -9
-2a2 = -173 + -9
Combine like terms: -173 + -9 = -182
-2a2 = -182
Divide each side by '-2'.
a2 = 91
Simplifying
a2 = 91
Take the square root of each side:
a = {-9.539392014, 9.539392014}
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