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Simplifying
2x2 + 4 = 7
Reorder the terms:
4 + 2x2 = 7
Solving
4 + 2x2 = 7
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-4' to each side of the equation.
4 + -4 + 2x2 = 7 + -4
Combine like terms: 4 + -4 = 0
0 + 2x2 = 7 + -4
2x2 = 7 + -4
Combine like terms: 7 + -4 = 3
2x2 = 3
Divide each side by '2'.
x2 = 1.5
Simplifying
x2 = 1.5
Take the square root of each side:
x = {-1.224744871, 1.224744871}
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