40x^2-100x-250=0

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Solution for 40x^2-100x-250=0 equation:


Simplifying
40x2 + -100x + -250 = 0

Reorder the terms:
-250 + -100x + 40x2 = 0

Solving
-250 + -100x + 40x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '10'.
10(-25 + -10x + 4x2) = 0

Ignore the factor 10.

Subproblem 1

Set the factor '(-25 + -10x + 4x2)' equal to zero and attempt to solve: Simplifying -25 + -10x + 4x2 = 0 Solving -25 + -10x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -6.25 + -2.5x + x2 = 0 Move the constant term to the right: Add '6.25' to each side of the equation. -6.25 + -2.5x + 6.25 + x2 = 0 + 6.25 Reorder the terms: -6.25 + 6.25 + -2.5x + x2 = 0 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + -2.5x + x2 = 0 + 6.25 -2.5x + x2 = 0 + 6.25 Combine like terms: 0 + 6.25 = 6.25 -2.5x + x2 = 6.25 The x term is -2.5x. Take half its coefficient (-1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. -2.5x + 1.5625 + x2 = 6.25 + 1.5625 Reorder the terms: 1.5625 + -2.5x + x2 = 6.25 + 1.5625 Combine like terms: 6.25 + 1.5625 = 7.8125 1.5625 + -2.5x + x2 = 7.8125 Factor a perfect square on the left side: (x + -1.25)(x + -1.25) = 7.8125 Calculate the square root of the right side: 2.795084972 Break this problem into two subproblems by setting (x + -1.25) equal to 2.795084972 and -2.795084972.

Subproblem 1

x + -1.25 = 2.795084972 Simplifying x + -1.25 = 2.795084972 Reorder the terms: -1.25 + x = 2.795084972 Solving -1.25 + x = 2.795084972 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 2.795084972 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 2.795084972 + 1.25 x = 2.795084972 + 1.25 Combine like terms: 2.795084972 + 1.25 = 4.045084972 x = 4.045084972 Simplifying x = 4.045084972

Subproblem 2

x + -1.25 = -2.795084972 Simplifying x + -1.25 = -2.795084972 Reorder the terms: -1.25 + x = -2.795084972 Solving -1.25 + x = -2.795084972 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -2.795084972 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -2.795084972 + 1.25 x = -2.795084972 + 1.25 Combine like terms: -2.795084972 + 1.25 = -1.545084972 x = -1.545084972 Simplifying x = -1.545084972

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.045084972, -1.545084972}

Solution

x = {4.045084972, -1.545084972}

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