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Simplifying
x2 + x2 + 4 = 74
Reorder the terms:
4 + x2 + x2 = 74
Combine like terms: x2 + x2 = 2x2
4 + 2x2 = 74
Solving
4 + 2x2 = 74
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 = 74 + -4
Combine like terms: 4 + -4 = 0
0 + 2x2 = 74 + -4
2x2 = 74 + -4
Combine like terms: 74 + -4 = 70
2x2 = 70
Divide each side by '2'.
x2 = 35
Simplifying
x2 = 35
Take the square root of each side:
x = {-5.916079783, 5.916079783}
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