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Simplifying
2x2 + 8 + -4 = 28
Reorder the terms:
8 + -4 + 2x2 = 28
Combine like terms: 8 + -4 = 4
4 + 2x2 = 28
Solving
4 + 2x2 = 28
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 = 28 + -4
Combine like terms: 4 + -4 = 0
0 + 2x2 = 28 + -4
2x2 = 28 + -4
Combine like terms: 28 + -4 = 24
2x2 = 24
Divide each side by '2'.
x2 = 12
Simplifying
x2 = 12
Take the square root of each side:
x = {-3.464101615, 3.464101615}
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