(2x^2+4x-2)+(4x^2+4x+13)-(6x^2-15)=

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Solution for (2x^2+4x-2)+(4x^2+4x+13)-(6x^2-15)= equation:


Simplifying
(2x2 + 4x + -2) + (4x2 + 4x + 13) + -1(6x2 + -15) = 0

Reorder the terms:
(-2 + 4x + 2x2) + (4x2 + 4x + 13) + -1(6x2 + -15) = 0

Remove parenthesis around (-2 + 4x + 2x2)
-2 + 4x + 2x2 + (4x2 + 4x + 13) + -1(6x2 + -15) = 0

Reorder the terms:
-2 + 4x + 2x2 + (13 + 4x + 4x2) + -1(6x2 + -15) = 0

Remove parenthesis around (13 + 4x + 4x2)
-2 + 4x + 2x2 + 13 + 4x + 4x2 + -1(6x2 + -15) = 0

Reorder the terms:
-2 + 4x + 2x2 + 13 + 4x + 4x2 + -1(-15 + 6x2) = 0
-2 + 4x + 2x2 + 13 + 4x + 4x2 + (-15 * -1 + 6x2 * -1) = 0
-2 + 4x + 2x2 + 13 + 4x + 4x2 + (15 + -6x2) = 0

Reorder the terms:
-2 + 13 + 15 + 4x + 4x + 2x2 + 4x2 + -6x2 = 0

Combine like terms: -2 + 13 = 11
11 + 15 + 4x + 4x + 2x2 + 4x2 + -6x2 = 0

Combine like terms: 11 + 15 = 26
26 + 4x + 4x + 2x2 + 4x2 + -6x2 = 0

Combine like terms: 4x + 4x = 8x
26 + 8x + 2x2 + 4x2 + -6x2 = 0

Combine like terms: 2x2 + 4x2 = 6x2
26 + 8x + 6x2 + -6x2 = 0

Combine like terms: 6x2 + -6x2 = 0
26 + 8x + 0 = 0
26 + 8x = 0

Solving
26 + 8x = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-26' to each side of the equation.
26 + -26 + 8x = 0 + -26

Combine like terms: 26 + -26 = 0
0 + 8x = 0 + -26
8x = 0 + -26

Combine like terms: 0 + -26 = -26
8x = -26

Divide each side by '8'.
x = -3.25

Simplifying
x = -3.25

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