2w^2-9=

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Solution for 2w^2-9= equation: 


Simplifying
2w2 + -9 = 0

Reorder the terms:
-9 + 2w2 = 0

Solving
-9 + 2w2 = 0

Solving for variable 'w'.

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

Add '9' to each side of the equation.
-9 + 9 + 2w2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 2w2 = 0 + 9
2w2 = 0 + 9

Combine like terms: 0 + 9 = 9
2w2 = 9

Divide each side by '2'.
w2 = 4.5

Simplifying
w2 = 4.5

Take the square root of each side:
w = {-2.121320344, 2.121320344}

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