y^2=21

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Solution for y^2=21 equation: 


Simplifying
y2 = 21

Solving
y2 = 21

Solving for variable 'y'.

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

Simplifying
y2 = 21

Take the square root of each side:
y = {-4.582575695, 4.582575695}

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