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Simplifying
x2 + 1 + -4 = 6
Reorder the terms:
1 + -4 + x2 = 6
Combine like terms: 1 + -4 = -3
-3 + x2 = 6
Solving
-3 + x2 = 6
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '3' to each side of the equation.
-3 + 3 + x2 = 6 + 3
Combine like terms: -3 + 3 = 0
0 + x2 = 6 + 3
x2 = 6 + 3
Combine like terms: 6 + 3 = 9
x2 = 9
Simplifying
x2 = 9
Take the square root of each side:
x = {-3, 3}
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