(2x-6)*(2x+6)+2x=-(30-4x^2)

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Solution for (2x-6)*(2x+6)+2x=-(30-4x^2) equation:


Simplifying
(2x + -6)(2x + 6) + 2x = -1(30 + -4x2)

Reorder the terms:
(-6 + 2x)(2x + 6) + 2x = -1(30 + -4x2)

Reorder the terms:
(-6 + 2x)(6 + 2x) + 2x = -1(30 + -4x2)

Multiply (-6 + 2x) * (6 + 2x)
(-6(6 + 2x) + 2x * (6 + 2x)) + 2x = -1(30 + -4x2)
((6 * -6 + 2x * -6) + 2x * (6 + 2x)) + 2x = -1(30 + -4x2)
((-36 + -12x) + 2x * (6 + 2x)) + 2x = -1(30 + -4x2)
(-36 + -12x + (6 * 2x + 2x * 2x)) + 2x = -1(30 + -4x2)
(-36 + -12x + (12x + 4x2)) + 2x = -1(30 + -4x2)

Combine like terms: -12x + 12x = 0
(-36 + 0 + 4x2) + 2x = -1(30 + -4x2)
(-36 + 4x2) + 2x = -1(30 + -4x2)

Reorder the terms:
-36 + 2x + 4x2 = -1(30 + -4x2)
-36 + 2x + 4x2 = (30 * -1 + -4x2 * -1)
-36 + 2x + 4x2 = (-30 + 4x2)

Add '-4x2' to each side of the equation.
-36 + 2x + 4x2 + -4x2 = -30 + 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-36 + 2x + 0 = -30 + 4x2 + -4x2
-36 + 2x = -30 + 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-36 + 2x = -30 + 0
-36 + 2x = -30

Solving
-36 + 2x = -30

Solving for variable 'x'.

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

Add '36' to each side of the equation.
-36 + 36 + 2x = -30 + 36

Combine like terms: -36 + 36 = 0
0 + 2x = -30 + 36
2x = -30 + 36

Combine like terms: -30 + 36 = 6
2x = 6

Divide each side by '2'.
x = 3

Simplifying
x = 3

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