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Simplifying
8y2 + -18 = 0
Reorder the terms:
-18 + 8y2 = 0
Solving
-18 + 8y2 = 0
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '18' to each side of the equation.
-18 + 18 + 8y2 = 0 + 18
Combine like terms: -18 + 18 = 0
0 + 8y2 = 0 + 18
8y2 = 0 + 18
Combine like terms: 0 + 18 = 18
8y2 = 18
Divide each side by '8'.
y2 = 2.25
Simplifying
y2 = 2.25
Take the square root of each side:
y = {-1.5, 1.5}
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