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Simplifying
x2 + 49 = 400
Reorder the terms:
49 + x2 = 400
Solving
49 + x2 = 400
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-49' to each side of the equation.
49 + -49 + x2 = 400 + -49
Combine like terms: 49 + -49 = 0
0 + x2 = 400 + -49
x2 = 400 + -49
Combine like terms: 400 + -49 = 351
x2 = 351
Simplifying
x2 = 351
Take the square root of each side:
x = {-18.734993995, 18.734993995}
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