4(x^2-5x+7)-8(x^2+3x-2)=

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Solution for 4(x^2-5x+7)-8(x^2+3x-2)= equation:


Simplifying
4(x2 + -5x + 7) + -8(x2 + 3x + -2) = 0

Reorder the terms:
4(7 + -5x + x2) + -8(x2 + 3x + -2) = 0
(7 * 4 + -5x * 4 + x2 * 4) + -8(x2 + 3x + -2) = 0
(28 + -20x + 4x2) + -8(x2 + 3x + -2) = 0

Reorder the terms:
28 + -20x + 4x2 + -8(-2 + 3x + x2) = 0
28 + -20x + 4x2 + (-2 * -8 + 3x * -8 + x2 * -8) = 0
28 + -20x + 4x2 + (16 + -24x + -8x2) = 0

Reorder the terms:
28 + 16 + -20x + -24x + 4x2 + -8x2 = 0

Combine like terms: 28 + 16 = 44
44 + -20x + -24x + 4x2 + -8x2 = 0

Combine like terms: -20x + -24x = -44x
44 + -44x + 4x2 + -8x2 = 0

Combine like terms: 4x2 + -8x2 = -4x2
44 + -44x + -4x2 = 0

Solving
44 + -44x + -4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '4'.
4(11 + -11x + -1x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(11 + -11x + -1x2)' equal to zero and attempt to solve: Simplifying 11 + -11x + -1x2 = 0 Solving 11 + -11x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -11 + 11x + x2 = 0 Move the constant term to the right: Add '11' to each side of the equation. -11 + 11x + 11 + x2 = 0 + 11 Reorder the terms: -11 + 11 + 11x + x2 = 0 + 11 Combine like terms: -11 + 11 = 0 0 + 11x + x2 = 0 + 11 11x + x2 = 0 + 11 Combine like terms: 0 + 11 = 11 11x + x2 = 11 The x term is 11x. Take half its coefficient (5.5). Square it (30.25) and add it to both sides. Add '30.25' to each side of the equation. 11x + 30.25 + x2 = 11 + 30.25 Reorder the terms: 30.25 + 11x + x2 = 11 + 30.25 Combine like terms: 11 + 30.25 = 41.25 30.25 + 11x + x2 = 41.25 Factor a perfect square on the left side: (x + 5.5)(x + 5.5) = 41.25 Calculate the square root of the right side: 6.422616289 Break this problem into two subproblems by setting (x + 5.5) equal to 6.422616289 and -6.422616289.

Subproblem 1

x + 5.5 = 6.422616289 Simplifying x + 5.5 = 6.422616289 Reorder the terms: 5.5 + x = 6.422616289 Solving 5.5 + x = 6.422616289 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = 6.422616289 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = 6.422616289 + -5.5 x = 6.422616289 + -5.5 Combine like terms: 6.422616289 + -5.5 = 0.922616289 x = 0.922616289 Simplifying x = 0.922616289

Subproblem 2

x + 5.5 = -6.422616289 Simplifying x + 5.5 = -6.422616289 Reorder the terms: 5.5 + x = -6.422616289 Solving 5.5 + x = -6.422616289 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + x = -6.422616289 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + x = -6.422616289 + -5.5 x = -6.422616289 + -5.5 Combine like terms: -6.422616289 + -5.5 = -11.922616289 x = -11.922616289 Simplifying x = -11.922616289

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.922616289, -11.922616289}

Solution

x = {0.922616289, -11.922616289}

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