6x(3+5x)-2*9=5x^2(7-13)+36

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Solution for 6x(3+5x)-2*9=5x^2(7-13)+36 equation:


Simplifying
6x(3 + 5x) + -2 * 9 = 5x2(7 + -13) + 36
(3 * 6x + 5x * 6x) + -2 * 9 = 5x2(7 + -13) + 36
(18x + 30x2) + -2 * 9 = 5x2(7 + -13) + 36

Multiply -2 * 9
18x + 30x2 + -18 = 5x2(7 + -13) + 36

Reorder the terms:
-18 + 18x + 30x2 = 5x2(7 + -13) + 36

Combine like terms: 7 + -13 = -6
-18 + 18x + 30x2 = 5x2(-6) + 36

Reorder the terms for easier multiplication:
-18 + 18x + 30x2 = 5 * -6x2 + 36

Multiply 5 * -6
-18 + 18x + 30x2 = -30x2 + 36

Reorder the terms:
-18 + 18x + 30x2 = 36 + -30x2

Solving
-18 + 18x + 30x2 = 36 + -30x2

Solving for variable 'x'.

Reorder the terms:
-18 + -36 + 18x + 30x2 + 30x2 = 36 + -30x2 + -36 + 30x2

Combine like terms: -18 + -36 = -54
-54 + 18x + 30x2 + 30x2 = 36 + -30x2 + -36 + 30x2

Combine like terms: 30x2 + 30x2 = 60x2
-54 + 18x + 60x2 = 36 + -30x2 + -36 + 30x2

Reorder the terms:
-54 + 18x + 60x2 = 36 + -36 + -30x2 + 30x2

Combine like terms: 36 + -36 = 0
-54 + 18x + 60x2 = 0 + -30x2 + 30x2
-54 + 18x + 60x2 = -30x2 + 30x2

Combine like terms: -30x2 + 30x2 = 0
-54 + 18x + 60x2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(-9 + 3x + 10x2) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(-9 + 3x + 10x2)' equal to zero and attempt to solve: Simplifying -9 + 3x + 10x2 = 0 Solving -9 + 3x + 10x2 = 0 Begin completing the square. Divide all terms by 10 the coefficient of the squared term: Divide each side by '10'. -0.9 + 0.3x + x2 = 0.0 Move the constant term to the right: Add '0.9' to each side of the equation. -0.9 + 0.3x + 0.9 + x2 = 0.0 + 0.9 Reorder the terms: -0.9 + 0.9 + 0.3x + x2 = 0.0 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + 0.3x + x2 = 0.0 + 0.9 0.3x + x2 = 0.0 + 0.9 Combine like terms: 0.0 + 0.9 = 0.9 0.3x + x2 = 0.9 The x term is 0.3x. Take half its coefficient (0.15). Square it (0.0225) and add it to both sides. Add '0.0225' to each side of the equation. 0.3x + 0.0225 + x2 = 0.9 + 0.0225 Reorder the terms: 0.0225 + 0.3x + x2 = 0.9 + 0.0225 Combine like terms: 0.9 + 0.0225 = 0.9225 0.0225 + 0.3x + x2 = 0.9225 Factor a perfect square on the left side: (x + 0.15)(x + 0.15) = 0.9225 Calculate the square root of the right side: 0.960468636 Break this problem into two subproblems by setting (x + 0.15) equal to 0.960468636 and -0.960468636.

Subproblem 1

x + 0.15 = 0.960468636 Simplifying x + 0.15 = 0.960468636 Reorder the terms: 0.15 + x = 0.960468636 Solving 0.15 + x = 0.960468636 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.15' to each side of the equation. 0.15 + -0.15 + x = 0.960468636 + -0.15 Combine like terms: 0.15 + -0.15 = 0.00 0.00 + x = 0.960468636 + -0.15 x = 0.960468636 + -0.15 Combine like terms: 0.960468636 + -0.15 = 0.810468636 x = 0.810468636 Simplifying x = 0.810468636

Subproblem 2

x + 0.15 = -0.960468636 Simplifying x + 0.15 = -0.960468636 Reorder the terms: 0.15 + x = -0.960468636 Solving 0.15 + x = -0.960468636 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.15' to each side of the equation. 0.15 + -0.15 + x = -0.960468636 + -0.15 Combine like terms: 0.15 + -0.15 = 0.00 0.00 + x = -0.960468636 + -0.15 x = -0.960468636 + -0.15 Combine like terms: -0.960468636 + -0.15 = -1.110468636 x = -1.110468636 Simplifying x = -1.110468636

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.810468636, -1.110468636}

Solution

x = {0.810468636, -1.110468636}

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