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Simplifying
5(X2 + -4) = 125
Reorder the terms:
5(-4 + X2) = 125
(-4 * 5 + X2 * 5) = 125
(-20 + 5X2) = 125
Solving
-20 + 5X2 = 125
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '20' to each side of the equation.
-20 + 20 + 5X2 = 125 + 20
Combine like terms: -20 + 20 = 0
0 + 5X2 = 125 + 20
5X2 = 125 + 20
Combine like terms: 125 + 20 = 145
5X2 = 145
Divide each side by '5'.
X2 = 29
Simplifying
X2 = 29
Take the square root of each side:
X = {-5.385164807, 5.385164807}
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