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Simplifying
x2 + 7 + -2 = 28
Reorder the terms:
7 + -2 + x2 = 28
Combine like terms: 7 + -2 = 5
5 + x2 = 28
Solving
5 + x2 = 28
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 + x2 = 28 + -5
Combine like terms: 5 + -5 = 0
0 + x2 = 28 + -5
x2 = 28 + -5
Combine like terms: 28 + -5 = 23
x2 = 23
Simplifying
x2 = 23
Take the square root of each side:
x = {-4.795831523, 4.795831523}
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