2x^2+7=9

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Solution for 2x^2+7=9 equation: 


Simplifying
2x2 + 7 = 9

Reorder the terms:
7 + 2x2 = 9

Solving
7 + 2x2 = 9

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + 2x2 = 9 + -7

Combine like terms: 7 + -7 = 0
0 + 2x2 = 9 + -7
2x2 = 9 + -7

Combine like terms: 9 + -7 = 2
2x2 = 2

Divide each side by '2'.
x2 = 1

Simplifying
x2 = 1

Take the square root of each side:
x = {-1, 1}

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