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Simplifying
36a2 + 9 = 25
Reorder the terms:
9 + 36a2 = 25
Solving
9 + 36a2 = 25
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 + 36a2 = 25 + -9
Combine like terms: 9 + -9 = 0
0 + 36a2 = 25 + -9
36a2 = 25 + -9
Combine like terms: 25 + -9 = 16
36a2 = 16
Divide each side by '36'.
a2 = 0.4444444444
Simplifying
a2 = 0.4444444444
Take the square root of each side:
a = {-0.666666667, 0.666666667}
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