0=-0.02x^2+x+6

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Solution for 0=-0.02x^2+x+6 equation:


Simplifying
0 = -0.02x2 + x + 6

Reorder the terms:
0 = 6 + x + -0.02x2

Solving
0 = 6 + x + -0.02x2

Solving for variable 'x'.

Combine like terms: 0 + -6 = -6
-6 + -1x + 0.02x2 = 6 + x + -0.02x2 + -6 + -1x + 0.02x2

Reorder the terms:
-6 + -1x + 0.02x2 = 6 + -6 + x + -1x + -0.02x2 + 0.02x2

Combine like terms: 6 + -6 = 0
-6 + -1x + 0.02x2 = 0 + x + -1x + -0.02x2 + 0.02x2
-6 + -1x + 0.02x2 = x + -1x + -0.02x2 + 0.02x2

Combine like terms: x + -1x = 0
-6 + -1x + 0.02x2 = 0 + -0.02x2 + 0.02x2
-6 + -1x + 0.02x2 = -0.02x2 + 0.02x2

Combine like terms: -0.02x2 + 0.02x2 = 0.00
-6 + -1x + 0.02x2 = 0.00

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

Divide each side by '0.02'.
-300 + -50x + x2 = 0

Move the constant term to the right:

Add '300' to each side of the equation.
-300 + -50x + 300 + x2 = 0 + 300

Reorder the terms:
-300 + 300 + -50x + x2 = 0 + 300

Combine like terms: -300 + 300 = 0
0 + -50x + x2 = 0 + 300
-50x + x2 = 0 + 300

Combine like terms: 0 + 300 = 300
-50x + x2 = 300

The x term is -50x.  Take half its coefficient (-25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
-50x + 625 + x2 = 300 + 625

Reorder the terms:
625 + -50x + x2 = 300 + 625

Combine like terms: 300 + 625 = 925
625 + -50x + x2 = 925

Factor a perfect square on the left side:
(x + -25)(x + -25) = 925

Calculate the square root of the right side: 30.413812651

Break this problem into two subproblems by setting 
(x + -25) equal to 30.413812651 and -30.413812651.

Subproblem 1

x + -25 = 30.413812651 Simplifying x + -25 = 30.413812651 Reorder the terms: -25 + x = 30.413812651 Solving -25 + x = 30.413812651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = 30.413812651 + 25 Combine like terms: -25 + 25 = 0 0 + x = 30.413812651 + 25 x = 30.413812651 + 25 Combine like terms: 30.413812651 + 25 = 55.413812651 x = 55.413812651 Simplifying x = 55.413812651

Subproblem 2

x + -25 = -30.413812651 Simplifying x + -25 = -30.413812651 Reorder the terms: -25 + x = -30.413812651 Solving -25 + x = -30.413812651 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = -30.413812651 + 25 Combine like terms: -25 + 25 = 0 0 + x = -30.413812651 + 25 x = -30.413812651 + 25 Combine like terms: -30.413812651 + 25 = -5.413812651 x = -5.413812651 Simplifying x = -5.413812651

Solution

The solution to the problem is based on the solutions from the subproblems. x = {55.413812651, -5.413812651}

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