8-10x-3x^2=12

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Solution for 8-10x-3x^2=12 equation:


Simplifying
8 + -10x + -3x2 = 12

Solving
8 + -10x + -3x2 = 12

Solving for variable 'x'.

Reorder the terms:
8 + -12 + -10x + -3x2 = 12 + -12

Combine like terms: 8 + -12 = -4
-4 + -10x + -3x2 = 12 + -12

Combine like terms: 12 + -12 = 0
-4 + -10x + -3x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(4 + 10x + 3x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(4 + 10x + 3x2)' equal to zero and attempt to solve: Simplifying 4 + 10x + 3x2 = 0 Solving 4 + 10x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. 1.333333333 + 3.333333333x + x2 = 0 Move the constant term to the right: Add '-1.333333333' to each side of the equation. 1.333333333 + 3.333333333x + -1.333333333 + x2 = 0 + -1.333333333 Reorder the terms: 1.333333333 + -1.333333333 + 3.333333333x + x2 = 0 + -1.333333333 Combine like terms: 1.333333333 + -1.333333333 = 0.000000000 0.000000000 + 3.333333333x + x2 = 0 + -1.333333333 3.333333333x + x2 = 0 + -1.333333333 Combine like terms: 0 + -1.333333333 = -1.333333333 3.333333333x + x2 = -1.333333333 The x term is 3.333333333x. Take half its coefficient (1.666666667). Square it (2.777777779) and add it to both sides. Add '2.777777779' to each side of the equation. 3.333333333x + 2.777777779 + x2 = -1.333333333 + 2.777777779 Reorder the terms: 2.777777779 + 3.333333333x + x2 = -1.333333333 + 2.777777779 Combine like terms: -1.333333333 + 2.777777779 = 1.444444446 2.777777779 + 3.333333333x + x2 = 1.444444446 Factor a perfect square on the left side: (x + 1.666666667)(x + 1.666666667) = 1.444444446 Calculate the square root of the right side: 1.201850426 Break this problem into two subproblems by setting (x + 1.666666667) equal to 1.201850426 and -1.201850426.

Subproblem 1

x + 1.666666667 = 1.201850426 Simplifying x + 1.666666667 = 1.201850426 Reorder the terms: 1.666666667 + x = 1.201850426 Solving 1.666666667 + x = 1.201850426 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.666666667' to each side of the equation. 1.666666667 + -1.666666667 + x = 1.201850426 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + x = 1.201850426 + -1.666666667 x = 1.201850426 + -1.666666667 Combine like terms: 1.201850426 + -1.666666667 = -0.464816241 x = -0.464816241 Simplifying x = -0.464816241

Subproblem 2

x + 1.666666667 = -1.201850426 Simplifying x + 1.666666667 = -1.201850426 Reorder the terms: 1.666666667 + x = -1.201850426 Solving 1.666666667 + x = -1.201850426 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.666666667' to each side of the equation. 1.666666667 + -1.666666667 + x = -1.201850426 + -1.666666667 Combine like terms: 1.666666667 + -1.666666667 = 0.000000000 0.000000000 + x = -1.201850426 + -1.666666667 x = -1.201850426 + -1.666666667 Combine like terms: -1.201850426 + -1.666666667 = -2.868517093 x = -2.868517093 Simplifying x = -2.868517093

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.464816241, -2.868517093}

Solution

x = {-0.464816241, -2.868517093}

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