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Simplifying
x2 + 1 = 7
Reorder the terms:
1 + x2 = 7
Solving
1 + x2 = 7
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1' to each side of the equation.
1 + -1 + x2 = 7 + -1
Combine like terms: 1 + -1 = 0
0 + x2 = 7 + -1
x2 = 7 + -1
Combine like terms: 7 + -1 = 6
x2 = 6
Simplifying
x2 = 6
Take the square root of each side:
x = {-2.449489743, 2.449489743}
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