2-g^2=-7

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Solution for 2-g^2=-7 equation: 


Simplifying
2 + -1g2 = -7

Solving
2 + -1g2 = -7

Solving for variable 'g'.

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

Add '-2' to each side of the equation.
2 + -2 + -1g2 = -7 + -2

Combine like terms: 2 + -2 = 0
0 + -1g2 = -7 + -2
-1g2 = -7 + -2

Combine like terms: -7 + -2 = -9
-1g2 = -9

Divide each side by '-1'.
g2 = 9

Simplifying
g2 = 9

Take the square root of each side:
g = {-3, 3}

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