3x(x-50)+5x=1300

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Solution for 3x(x-50)+5x=1300 equation:


Simplifying
3x(x + -50) + 5x = 1300

Reorder the terms:
3x(-50 + x) + 5x = 1300
(-50 * 3x + x * 3x) + 5x = 1300
(-150x + 3x2) + 5x = 1300

Reorder the terms:
-150x + 5x + 3x2 = 1300

Combine like terms: -150x + 5x = -145x
-145x + 3x2 = 1300

Solving
-145x + 3x2 = 1300

Solving for variable 'x'.

Reorder the terms:
-1300 + -145x + 3x2 = 1300 + -1300

Combine like terms: 1300 + -1300 = 0
-1300 + -145x + 3x2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
-433.3333333 + -48.33333333x + x2 = 0

Move the constant term to the right:

Add '433.3333333' to each side of the equation.
-433.3333333 + -48.33333333x + 433.3333333 + x2 = 0 + 433.3333333

Reorder the terms:
-433.3333333 + 433.3333333 + -48.33333333x + x2 = 0 + 433.3333333

Combine like terms: -433.3333333 + 433.3333333 = 0.0000000
0.0000000 + -48.33333333x + x2 = 0 + 433.3333333
-48.33333333x + x2 = 0 + 433.3333333

Combine like terms: 0 + 433.3333333 = 433.3333333
-48.33333333x + x2 = 433.3333333

The x term is -48.33333333x.  Take half its coefficient (-24.16666667).
Square it (584.0277779) and add it to both sides.

Add '584.0277779' to each side of the equation.
-48.33333333x + 584.0277779 + x2 = 433.3333333 + 584.0277779

Reorder the terms:
584.0277779 + -48.33333333x + x2 = 433.3333333 + 584.0277779

Combine like terms: 433.3333333 + 584.0277779 = 1017.3611112
584.0277779 + -48.33333333x + x2 = 1017.3611112

Factor a perfect square on the left side:
(x + -24.16666667)(x + -24.16666667) = 1017.3611112

Calculate the square root of the right side: 31.896098683

Break this problem into two subproblems by setting 
(x + -24.16666667) equal to 31.896098683 and -31.896098683.

Subproblem 1

x + -24.16666667 = 31.896098683 Simplifying x + -24.16666667 = 31.896098683 Reorder the terms: -24.16666667 + x = 31.896098683 Solving -24.16666667 + x = 31.896098683 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '24.16666667' to each side of the equation. -24.16666667 + 24.16666667 + x = 31.896098683 + 24.16666667 Combine like terms: -24.16666667 + 24.16666667 = 0.00000000 0.00000000 + x = 31.896098683 + 24.16666667 x = 31.896098683 + 24.16666667 Combine like terms: 31.896098683 + 24.16666667 = 56.062765353 x = 56.062765353 Simplifying x = 56.062765353

Subproblem 2

x + -24.16666667 = -31.896098683 Simplifying x + -24.16666667 = -31.896098683 Reorder the terms: -24.16666667 + x = -31.896098683 Solving -24.16666667 + x = -31.896098683 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '24.16666667' to each side of the equation. -24.16666667 + 24.16666667 + x = -31.896098683 + 24.16666667 Combine like terms: -24.16666667 + 24.16666667 = 0.00000000 0.00000000 + x = -31.896098683 + 24.16666667 x = -31.896098683 + 24.16666667 Combine like terms: -31.896098683 + 24.16666667 = -7.729432013 x = -7.729432013 Simplifying x = -7.729432013

Solution

The solution to the problem is based on the solutions from the subproblems. x = {56.062765353, -7.729432013}

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