5x(3x-5)=25

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Solution for 5x(3x-5)=25 equation:


Simplifying
5x(3x + -5) = 25

Reorder the terms:
5x(-5 + 3x) = 25
(-5 * 5x + 3x * 5x) = 25
(-25x + 15x2) = 25

Solving
-25x + 15x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + -25x + 15x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + -25x + 15x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-5 + -5x + 3x2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-5 + -5x + 3x2)' equal to zero and attempt to solve: Simplifying -5 + -5x + 3x2 = 0 Solving -5 + -5x + 3x2 = 0 Begin completing the square. Divide all terms by 3 the coefficient of the squared term: Divide each side by '3'. -1.666666667 + -1.666666667x + x2 = 0 Move the constant term to the right: Add '1.666666667' to each side of the equation. -1.666666667 + -1.666666667x + 1.666666667 + x2 = 0 + 1.666666667 Reorder the terms: -1.666666667 + 1.666666667 + -1.666666667x + x2 = 0 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + -1.666666667x + x2 = 0 + 1.666666667 -1.666666667x + x2 = 0 + 1.666666667 Combine like terms: 0 + 1.666666667 = 1.666666667 -1.666666667x + x2 = 1.666666667 The x term is -1.666666667x. Take half its coefficient (-0.8333333335). Square it (0.6944444447) and add it to both sides. Add '0.6944444447' to each side of the equation. -1.666666667x + 0.6944444447 + x2 = 1.666666667 + 0.6944444447 Reorder the terms: 0.6944444447 + -1.666666667x + x2 = 1.666666667 + 0.6944444447 Combine like terms: 1.666666667 + 0.6944444447 = 2.3611111117 0.6944444447 + -1.666666667x + x2 = 2.3611111117 Factor a perfect square on the left side: (x + -0.8333333335)(x + -0.8333333335) = 2.3611111117 Calculate the square root of the right side: 1.536590743 Break this problem into two subproblems by setting (x + -0.8333333335) equal to 1.536590743 and -1.536590743.

Subproblem 1

x + -0.8333333335 = 1.536590743 Simplifying x + -0.8333333335 = 1.536590743 Reorder the terms: -0.8333333335 + x = 1.536590743 Solving -0.8333333335 + x = 1.536590743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + x = 1.536590743 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + x = 1.536590743 + 0.8333333335 x = 1.536590743 + 0.8333333335 Combine like terms: 1.536590743 + 0.8333333335 = 2.3699240765 x = 2.3699240765 Simplifying x = 2.3699240765

Subproblem 2

x + -0.8333333335 = -1.536590743 Simplifying x + -0.8333333335 = -1.536590743 Reorder the terms: -0.8333333335 + x = -1.536590743 Solving -0.8333333335 + x = -1.536590743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + x = -1.536590743 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + x = -1.536590743 + 0.8333333335 x = -1.536590743 + 0.8333333335 Combine like terms: -1.536590743 + 0.8333333335 = -0.7032574095 x = -0.7032574095 Simplifying x = -0.7032574095

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.3699240765, -0.7032574095}

Solution

x = {2.3699240765, -0.7032574095}

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