u^2+7=87

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Solution for u^2+7=87 equation: 


Simplifying
u2 + 7 = 87

Reorder the terms:
7 + u2 = 87

Solving
7 + u2 = 87

Solving for variable 'u'.

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

Add '-7' to each side of the equation.
7 + -7 + u2 = 87 + -7

Combine like terms: 7 + -7 = 0
0 + u2 = 87 + -7
u2 = 87 + -7

Combine like terms: 87 + -7 = 80
u2 = 80

Simplifying
u2 = 80

Take the square root of each side:
u = {-8.94427191, 8.94427191}

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