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Simplifying
2x2 + 2x + 5 = 13 + 2x
Reorder the terms:
5 + 2x + 2x2 = 13 + 2x
Add '-2x' to each side of the equation.
5 + 2x + -2x + 2x2 = 13 + 2x + -2x
Combine like terms: 2x + -2x = 0
5 + 0 + 2x2 = 13 + 2x + -2x
5 + 2x2 = 13 + 2x + -2x
Combine like terms: 2x + -2x = 0
5 + 2x2 = 13 + 0
5 + 2x2 = 13
Solving
5 + 2x2 = 13
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-5' to each side of the equation.
5 + -5 + 2x2 = 13 + -5
Combine like terms: 5 + -5 = 0
0 + 2x2 = 13 + -5
2x2 = 13 + -5
Combine like terms: 13 + -5 = 8
2x2 = 8
Divide each side by '2'.
x2 = 4
Simplifying
x2 = 4
Take the square root of each side:
x = {-2, 2}
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