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Simplifying
x2 + 3x + -100 = 3x
Reorder the terms:
-100 + 3x + x2 = 3x
Add '-3x' to each side of the equation.
-100 + 3x + -3x + x2 = 3x + -3x
Combine like terms: 3x + -3x = 0
-100 + 0 + x2 = 3x + -3x
-100 + x2 = 3x + -3x
Combine like terms: 3x + -3x = 0
-100 + x2 = 0
Solving
-100 + x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '100' to each side of the equation.
-100 + 100 + x2 = 0 + 100
Combine like terms: -100 + 100 = 0
0 + x2 = 0 + 100
x2 = 0 + 100
Combine like terms: 0 + 100 = 100
x2 = 100
Simplifying
x2 = 100
Take the square root of each side:
x = {-10, 10}
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