Y^2-10=90

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Solution for Y^2-10=90 equation: 


Simplifying
Y2 + -10 = 90

Reorder the terms:
-10 + Y2 = 90

Solving
-10 + Y2 = 90

Solving for variable 'Y'.

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

Add '10' to each side of the equation.
-10 + 10 + Y2 = 90 + 10

Combine like terms: -10 + 10 = 0
0 + Y2 = 90 + 10
Y2 = 90 + 10

Combine like terms: 90 + 10 = 100
Y2 = 100

Simplifying
Y2 = 100

Take the square root of each side:
Y = {-10, 10}

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