4x^2-14x-70=0

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Solution for 4x^2-14x-70=0 equation:


Simplifying
4x2 + -14x + -70 = 0

Reorder the terms:
-70 + -14x + 4x2 = 0

Solving
-70 + -14x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-35 + -7x + 2x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-35 + -7x + 2x2)' equal to zero and attempt to solve: Simplifying -35 + -7x + 2x2 = 0 Solving -35 + -7x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -17.5 + -3.5x + x2 = 0 Move the constant term to the right: Add '17.5' to each side of the equation. -17.5 + -3.5x + 17.5 + x2 = 0 + 17.5 Reorder the terms: -17.5 + 17.5 + -3.5x + x2 = 0 + 17.5 Combine like terms: -17.5 + 17.5 = 0.0 0.0 + -3.5x + x2 = 0 + 17.5 -3.5x + x2 = 0 + 17.5 Combine like terms: 0 + 17.5 = 17.5 -3.5x + x2 = 17.5 The x term is -3.5x. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5x + 3.0625 + x2 = 17.5 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = 17.5 + 3.0625 Combine like terms: 17.5 + 3.0625 = 20.5625 3.0625 + -3.5x + x2 = 20.5625 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = 20.5625 Calculate the square root of the right side: 4.534589287 Break this problem into two subproblems by setting (x + -1.75) equal to 4.534589287 and -4.534589287.

Subproblem 1

x + -1.75 = 4.534589287 Simplifying x + -1.75 = 4.534589287 Reorder the terms: -1.75 + x = 4.534589287 Solving -1.75 + x = 4.534589287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 4.534589287 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 4.534589287 + 1.75 x = 4.534589287 + 1.75 Combine like terms: 4.534589287 + 1.75 = 6.284589287 x = 6.284589287 Simplifying x = 6.284589287

Subproblem 2

x + -1.75 = -4.534589287 Simplifying x + -1.75 = -4.534589287 Reorder the terms: -1.75 + x = -4.534589287 Solving -1.75 + x = -4.534589287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -4.534589287 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -4.534589287 + 1.75 x = -4.534589287 + 1.75 Combine like terms: -4.534589287 + 1.75 = -2.784589287 x = -2.784589287 Simplifying x = -2.784589287

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.284589287, -2.784589287}

Solution

x = {6.284589287, -2.784589287}

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