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Simplifying
2x2 + 5 = 8
Reorder the terms:
5 + 2x2 = 8
Solving
5 + 2x2 = 8
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 2x2 = 8 + -5
Combine like terms: 5 + -5 = 0
0 + 2x2 = 8 + -5
2x2 = 8 + -5
Combine like terms: 8 + -5 = 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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