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Simplifying
8x2 + 28 = 220
Reorder the terms:
28 + 8x2 = 220
Solving
28 + 8x2 = 220
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-28' to each side of the equation.
28 + -28 + 8x2 = 220 + -28
Combine like terms: 28 + -28 = 0
0 + 8x2 = 220 + -28
8x2 = 220 + -28
Combine like terms: 220 + -28 = 192
8x2 = 192
Divide each side by '8'.
x2 = 24
Simplifying
x2 = 24
Take the square root of each side:
x = {-4.898979486, 4.898979486}
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