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Simplifying
5x2 + -40 = 100
Reorder the terms:
-40 + 5x2 = 100
Solving
-40 + 5x2 = 100
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '40' to each side of the equation.
-40 + 40 + 5x2 = 100 + 40
Combine like terms: -40 + 40 = 0
0 + 5x2 = 100 + 40
5x2 = 100 + 40
Combine like terms: 100 + 40 = 140
5x2 = 140
Divide each side by '5'.
x2 = 28
Simplifying
x2 = 28
Take the square root of each side:
x = {-5.291502622, 5.291502622}
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