w^2+6=21

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Solution for w^2+6=21 equation: 


Simplifying
w2 + 6 = 21

Reorder the terms:
6 + w2 = 21

Solving
6 + w2 = 21

Solving for variable 'w'.

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

Add '-6' to each side of the equation.
6 + -6 + w2 = 21 + -6

Combine like terms: 6 + -6 = 0
0 + w2 = 21 + -6
w2 = 21 + -6

Combine like terms: 21 + -6 = 15
w2 = 15

Simplifying
w2 = 15

Take the square root of each side:
w = {-3.872983346, 3.872983346}

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