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Simplifying
10x2 + -1 = 489
Reorder the terms:
-1 + 10x2 = 489
Solving
-1 + 10x2 = 489
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 + 10x2 = 489 + 1
Combine like terms: -1 + 1 = 0
0 + 10x2 = 489 + 1
10x2 = 489 + 1
Combine like terms: 489 + 1 = 490
10x2 = 490
Divide each side by '10'.
x2 = 49
Simplifying
x2 = 49
Take the square root of each side:
x = {-7, 7}
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