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Simplifying
4a2 + 9 = 205
Reorder the terms:
9 + 4a2 = 205
Solving
9 + 4a2 = 205
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 + 4a2 = 205 + -9
Combine like terms: 9 + -9 = 0
0 + 4a2 = 205 + -9
4a2 = 205 + -9
Combine like terms: 205 + -9 = 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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