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Simplifying
3x2 + -1 = 7
Reorder the terms:
-1 + 3x2 = 7
Solving
-1 + 3x2 = 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 + 3x2 = 7 + 1
Combine like terms: -1 + 1 = 0
0 + 3x2 = 7 + 1
3x2 = 7 + 1
Combine like terms: 7 + 1 = 8
3x2 = 8
Divide each side by '3'.
x2 = 2.666666667
Simplifying
x2 = 2.666666667
Take the square root of each side:
x = {-1.632993162, 1.632993162}
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