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Simplifying
4y2 + 7 = 12
Reorder the terms:
7 + 4y2 = 12
Solving
7 + 4y2 = 12
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Add '-7' to each side of the equation.
7 + -7 + 4y2 = 12 + -7
Combine like terms: 7 + -7 = 0
0 + 4y2 = 12 + -7
4y2 = 12 + -7
Combine like terms: 12 + -7 = 5
4y2 = 5
Divide each side by '4'.
y2 = 1.25
Simplifying
y2 = 1.25
Take the square root of each side:
y = {-1.118033989, 1.118033989}
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