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Simplifying
8x2 + -79 = 49
Reorder the terms:
-79 + 8x2 = 49
Solving
-79 + 8x2 = 49
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '79' to each side of the equation.
-79 + 79 + 8x2 = 49 + 79
Combine like terms: -79 + 79 = 0
0 + 8x2 = 49 + 79
8x2 = 49 + 79
Combine like terms: 49 + 79 = 128
8x2 = 128
Divide each side by '8'.
x2 = 16
Simplifying
x2 = 16
Take the square root of each side:
x = {-4, 4}
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