6x(x-6)-8(x+2)=-18

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Solution for 6x(x-6)-8(x+2)=-18 equation:


Simplifying
6x(x + -6) + -8(x + 2) = -18

Reorder the terms:
6x(-6 + x) + -8(x + 2) = -18
(-6 * 6x + x * 6x) + -8(x + 2) = -18
(-36x + 6x2) + -8(x + 2) = -18

Reorder the terms:
-36x + 6x2 + -8(2 + x) = -18
-36x + 6x2 + (2 * -8 + x * -8) = -18
-36x + 6x2 + (-16 + -8x) = -18

Reorder the terms:
-16 + -36x + -8x + 6x2 = -18

Combine like terms: -36x + -8x = -44x
-16 + -44x + 6x2 = -18

Solving
-16 + -44x + 6x2 = -18

Solving for variable 'x'.

Reorder the terms:
-16 + 18 + -44x + 6x2 = -18 + 18

Combine like terms: -16 + 18 = 2
2 + -44x + 6x2 = -18 + 18

Combine like terms: -18 + 18 = 0
2 + -44x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -22x + 3x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(1 + -22x + 3x2)' equal to zero and attempt to solve: Simplifying 1 + -22x + 3x2 = 0 Solving 1 + -22x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 0.3333333333 + -7.333333333x + x2 = 0 Move the constant term to the right: Add '-0.3333333333' to each side of the equation. 0.3333333333 + -7.333333333x + -0.3333333333 + x2 = 0 + -0.3333333333 Reorder the terms: 0.3333333333 + -0.3333333333 + -7.333333333x + x2 = 0 + -0.3333333333 Combine like terms: 0.3333333333 + -0.3333333333 = 0.0000000000 0.0000000000 + -7.333333333x + x2 = 0 + -0.3333333333 -7.333333333x + x2 = 0 + -0.3333333333 Combine like terms: 0 + -0.3333333333 = -0.3333333333 -7.333333333x + x2 = -0.3333333333 The x term is -7.333333333x. Take half its coefficient (-3.666666667). Square it (13.44444445) and add it to both sides. Add '13.44444445' to each side of the equation. -7.333333333x + 13.44444445 + x2 = -0.3333333333 + 13.44444445 Reorder the terms: 13.44444445 + -7.333333333x + x2 = -0.3333333333 + 13.44444445 Combine like terms: -0.3333333333 + 13.44444445 = 13.1111111167 13.44444445 + -7.333333333x + x2 = 13.1111111167 Factor a perfect square on the left side: (x + -3.666666667)(x + -3.666666667) = 13.1111111167 Calculate the square root of the right side: 3.620926831 Break this problem into two subproblems by setting (x + -3.666666667) equal to 3.620926831 and -3.620926831.

Subproblem 1

x + -3.666666667 = 3.620926831 Simplifying x + -3.666666667 = 3.620926831 Reorder the terms: -3.666666667 + x = 3.620926831 Solving -3.666666667 + x = 3.620926831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.666666667' to each side of the equation. -3.666666667 + 3.666666667 + x = 3.620926831 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + x = 3.620926831 + 3.666666667 x = 3.620926831 + 3.666666667 Combine like terms: 3.620926831 + 3.666666667 = 7.287593498 x = 7.287593498 Simplifying x = 7.287593498

Subproblem 2

x + -3.666666667 = -3.620926831 Simplifying x + -3.666666667 = -3.620926831 Reorder the terms: -3.666666667 + x = -3.620926831 Solving -3.666666667 + x = -3.620926831 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.666666667' to each side of the equation. -3.666666667 + 3.666666667 + x = -3.620926831 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + x = -3.620926831 + 3.666666667 x = -3.620926831 + 3.666666667 Combine like terms: -3.620926831 + 3.666666667 = 0.045739836 x = 0.045739836 Simplifying x = 0.045739836

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.287593498, 0.045739836}

Solution

x = {7.287593498, 0.045739836}

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