y^2+1=9

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Solution for y^2+1=9 equation: 


Simplifying
y2 + 1 = 9

Reorder the terms:
1 + y2 = 9

Solving
1 + y2 = 9

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + y2 = 9 + -1

Combine like terms: 1 + -1 = 0
0 + y2 = 9 + -1
y2 = 9 + -1

Combine like terms: 9 + -1 = 8
y2 = 8

Simplifying
y2 = 8

Take the square root of each side:
y = {-2.828427125, 2.828427125}

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