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Simplifying
7x2 + 4 = 12
Reorder the terms:
4 + 7x2 = 12
Solving
4 + 7x2 = 12
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 + 7x2 = 12 + -4
Combine like terms: 4 + -4 = 0
0 + 7x2 = 12 + -4
7x2 = 12 + -4
Combine like terms: 12 + -4 = 8
7x2 = 8
Divide each side by '7'.
x2 = 1.142857143
Simplifying
x2 = 1.142857143
Take the square root of each side:
x = {-1.069044968, 1.069044968}
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