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Simplifying
3x2 + -7 = 206
Reorder the terms:
-7 + 3x2 = 206
Solving
-7 + 3x2 = 206
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '7' to each side of the equation.
-7 + 7 + 3x2 = 206 + 7
Combine like terms: -7 + 7 = 0
0 + 3x2 = 206 + 7
3x2 = 206 + 7
Combine like terms: 206 + 7 = 213
3x2 = 213
Divide each side by '3'.
x2 = 71
Simplifying
x2 = 71
Take the square root of each side:
x = {-8.426149773, 8.426149773}
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