y*y-49=0

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Solution for y*y-49=0 equation: 


Simplifying
y * y + -49 = 0

Multiply y * y
y2 + -49 = 0

Reorder the terms:
-49 + y2 = 0

Solving
-49 + y2 = 0

Solving for variable 'y'.

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

Add '49' to each side of the equation.
-49 + 49 + y2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + y2 = 0 + 49
y2 = 0 + 49

Combine like terms: 0 + 49 = 49
y2 = 49

Simplifying
y2 = 49

Take the square root of each side:
y = {-7, 7}

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