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Simplifying
7x2 + 4 = 130
Reorder the terms:
4 + 7x2 = 130
Solving
4 + 7x2 = 130
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 = 130 + -4
Combine like terms: 4 + -4 = 0
0 + 7x2 = 130 + -4
7x2 = 130 + -4
Combine like terms: 130 + -4 = 126
7x2 = 126
Divide each side by '7'.
x2 = 18
Simplifying
x2 = 18
Take the square root of each side:
x = {-4.242640687, 4.242640687}
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