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Simplifying
x2 + 3x + -3x + -28 = 0
Reorder the terms:
-28 + 3x + -3x + x2 = 0
Combine like terms: 3x + -3x = 0
-28 + 0 + x2 = 0
-28 + x2 = 0
Solving
-28 + x2 = 0
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 + x2 = 0 + 28
Combine like terms: -28 + 28 = 0
0 + x2 = 0 + 28
x2 = 0 + 28
Combine like terms: 0 + 28 = 28
x2 = 28
Simplifying
x2 = 28
Take the square root of each side:
x = {-5.291502622, 5.291502622}
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