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Simplifying
x2 + -1 + -7 = 3
Reorder the terms:
-1 + -7 + x2 = 3
Combine like terms: -1 + -7 = -8
-8 + x2 = 3
Solving
-8 + x2 = 3
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '8' to each side of the equation.
-8 + 8 + x2 = 3 + 8
Combine like terms: -8 + 8 = 0
0 + x2 = 3 + 8
x2 = 3 + 8
Combine like terms: 3 + 8 = 11
x2 = 11
Simplifying
x2 = 11
Take the square root of each side:
x = {-3.31662479, 3.31662479}
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