-121=-4y^2

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Solution for -121=-4y^2 equation:


Simplifying
-121 = -4y2

Solving
-121 = -4y2

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '4y2' to each side of the equation.
-121 + 4y2 = -4y2 + 4y2

Combine like terms: -4y2 + 4y2 = 0
-121 + 4y2 = 0

Add '121' to each side of the equation.
-121 + 121 + 4y2 = 0 + 121

Combine like terms: -121 + 121 = 0
0 + 4y2 = 0 + 121
4y2 = 0 + 121

Combine like terms: 0 + 121 = 121
4y2 = 121

Divide each side by '4'.
y2 = 30.25

Simplifying
y2 = 30.25

Take the square root of each side:
y = {-5.5, 5.5}

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