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Simplifying
10x2 + -9 = 491
Reorder the terms:
-9 + 10x2 = 491
Solving
-9 + 10x2 = 491
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '9' to each side of the equation.
-9 + 9 + 10x2 = 491 + 9
Combine like terms: -9 + 9 = 0
0 + 10x2 = 491 + 9
10x2 = 491 + 9
Combine like terms: 491 + 9 = 500
10x2 = 500
Divide each side by '10'.
x2 = 50
Simplifying
x2 = 50
Take the square root of each side:
x = {-7.071067812, 7.071067812}
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