20-5y^2=0

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Solution for 20-5y^2=0 equation: 


Simplifying
20 + -5y2 = 0

Solving
20 + -5y2 = 0

Solving for variable 'y'.

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

Add '-20' to each side of the equation.
20 + -20 + -5y2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -5y2 = 0 + -20
-5y2 = 0 + -20

Combine like terms: 0 + -20 = -20
-5y2 = -20

Divide each side by '-5'.
y2 = 4

Simplifying
y2 = 4

Take the square root of each side:
y = {-2, 2}

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