-0.9x^2+73x=0.6x^2+10x+588

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Solution for -0.9x^2+73x=0.6x^2+10x+588 equation:


Simplifying
-0.9x2 + 73x = 0.6x2 + 10x + 588

Reorder the terms:
73x + -0.9x2 = 0.6x2 + 10x + 588

Reorder the terms:
73x + -0.9x2 = 588 + 10x + 0.6x2

Solving
73x + -0.9x2 = 588 + 10x + 0.6x2

Solving for variable 'x'.

Reorder the terms:
-588 + 73x + -10x + -0.9x2 + -0.6x2 = 588 + 10x + 0.6x2 + -588 + -10x + -0.6x2

Combine like terms: 73x + -10x = 63x
-588 + 63x + -0.9x2 + -0.6x2 = 588 + 10x + 0.6x2 + -588 + -10x + -0.6x2

Combine like terms: -0.9x2 + -0.6x2 = -1.5x2
-588 + 63x + -1.5x2 = 588 + 10x + 0.6x2 + -588 + -10x + -0.6x2

Reorder the terms:
-588 + 63x + -1.5x2 = 588 + -588 + 10x + -10x + 0.6x2 + -0.6x2

Combine like terms: 588 + -588 = 0
-588 + 63x + -1.5x2 = 0 + 10x + -10x + 0.6x2 + -0.6x2
-588 + 63x + -1.5x2 = 10x + -10x + 0.6x2 + -0.6x2

Combine like terms: 10x + -10x = 0
-588 + 63x + -1.5x2 = 0 + 0.6x2 + -0.6x2
-588 + 63x + -1.5x2 = 0.6x2 + -0.6x2

Combine like terms: 0.6x2 + -0.6x2 = 0.0
-588 + 63x + -1.5x2 = 0.0

Begin completing the square.  Divide all terms by
-1.5 the coefficient of the squared term: 

Divide each side by '-1.5'.
392 + -42x + x2 = 0

Move the constant term to the right:

Add '-392' to each side of the equation.
392 + -42x + -392 + x2 = 0 + -392

Reorder the terms:
392 + -392 + -42x + x2 = 0 + -392

Combine like terms: 392 + -392 = 0
0 + -42x + x2 = 0 + -392
-42x + x2 = 0 + -392

Combine like terms: 0 + -392 = -392
-42x + x2 = -392

The x term is -42x.  Take half its coefficient (-21).
Square it (441) and add it to both sides.

Add '441' to each side of the equation.
-42x + 441 + x2 = -392 + 441

Reorder the terms:
441 + -42x + x2 = -392 + 441

Combine like terms: -392 + 441 = 49
441 + -42x + x2 = 49

Factor a perfect square on the left side:
(x + -21)(x + -21) = 49

Calculate the square root of the right side: 7

Break this problem into two subproblems by setting 
(x + -21) equal to 7 and -7.

Subproblem 1

x + -21 = 7 Simplifying x + -21 = 7 Reorder the terms: -21 + x = 7 Solving -21 + x = 7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + x = 7 + 21 Combine like terms: -21 + 21 = 0 0 + x = 7 + 21 x = 7 + 21 Combine like terms: 7 + 21 = 28 x = 28 Simplifying x = 28

Subproblem 2

x + -21 = -7 Simplifying x + -21 = -7 Reorder the terms: -21 + x = -7 Solving -21 + x = -7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + x = -7 + 21 Combine like terms: -21 + 21 = 0 0 + x = -7 + 21 x = -7 + 21 Combine like terms: -7 + 21 = 14 x = 14 Simplifying x = 14

Solution

The solution to the problem is based on the solutions from the subproblems. x = {28, 14}

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