3x^2+60x-1600=0

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Solution for 3x^2+60x-1600=0 equation:


Simplifying
3x2 + 60x + -1600 = 0

Reorder the terms:
-1600 + 60x + 3x2 = 0

Solving
-1600 + 60x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-533.3333333 + 20x + x2 = 0

Move the constant term to the right:

Add '533.3333333' to each side of the equation.
-533.3333333 + 20x + 533.3333333 + x2 = 0 + 533.3333333

Reorder the terms:
-533.3333333 + 533.3333333 + 20x + x2 = 0 + 533.3333333

Combine like terms: -533.3333333 + 533.3333333 = 0.0000000
0.0000000 + 20x + x2 = 0 + 533.3333333
20x + x2 = 0 + 533.3333333

Combine like terms: 0 + 533.3333333 = 533.3333333
20x + x2 = 533.3333333

The x term is 20x.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20x + 100 + x2 = 533.3333333 + 100

Reorder the terms:
100 + 20x + x2 = 533.3333333 + 100

Combine like terms: 533.3333333 + 100 = 633.3333333
100 + 20x + x2 = 633.3333333

Factor a perfect square on the left side:
(x + 10)(x + 10) = 633.3333333

Calculate the square root of the right side: 25.166114784

Break this problem into two subproblems by setting 
(x + 10) equal to 25.166114784 and -25.166114784.

Subproblem 1

x + 10 = 25.166114784 Simplifying x + 10 = 25.166114784 Reorder the terms: 10 + x = 25.166114784 Solving 10 + x = 25.166114784 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 25.166114784 + -10 Combine like terms: 10 + -10 = 0 0 + x = 25.166114784 + -10 x = 25.166114784 + -10 Combine like terms: 25.166114784 + -10 = 15.166114784 x = 15.166114784 Simplifying x = 15.166114784

Subproblem 2

x + 10 = -25.166114784 Simplifying x + 10 = -25.166114784 Reorder the terms: 10 + x = -25.166114784 Solving 10 + x = -25.166114784 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -25.166114784 + -10 Combine like terms: 10 + -10 = 0 0 + x = -25.166114784 + -10 x = -25.166114784 + -10 Combine like terms: -25.166114784 + -10 = -35.166114784 x = -35.166114784 Simplifying x = -35.166114784

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.166114784, -35.166114784}

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