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Simplifying
x2 + -5x + -105 = -5x + -5
Reorder the terms:
-105 + -5x + x2 = -5x + -5
Reorder the terms:
-105 + -5x + x2 = -5 + -5x
Add '5x' to each side of the equation.
-105 + -5x + 5x + x2 = -5 + -5x + 5x
Combine like terms: -5x + 5x = 0
-105 + 0 + x2 = -5 + -5x + 5x
-105 + x2 = -5 + -5x + 5x
Combine like terms: -5x + 5x = 0
-105 + x2 = -5 + 0
-105 + x2 = -5
Solving
-105 + x2 = -5
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '105' to each side of the equation.
-105 + 105 + x2 = -5 + 105
Combine like terms: -105 + 105 = 0
0 + x2 = -5 + 105
x2 = -5 + 105
Combine like terms: -5 + 105 = 100
x2 = 100
Simplifying
x2 = 100
Take the square root of each side:
x = {-10, 10}
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