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Simplifying
64y2 + -81 = 0
Reorder the terms:
-81 + 64y2 = 0
Solving
-81 + 64y2 = 0
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '81' to each side of the equation.
-81 + 81 + 64y2 = 0 + 81
Combine like terms: -81 + 81 = 0
0 + 64y2 = 0 + 81
64y2 = 0 + 81
Combine like terms: 0 + 81 = 81
64y2 = 81
Divide each side by '64'.
y2 = 1.265625
Simplifying
y2 = 1.265625
Take the square root of each side:
y = {-1.125, 1.125}
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