.02x^2-7x+300=0

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Solution for .02x^2-7x+300=0 equation:


Simplifying
0.02x2 + -7x + 300 = 0

Reorder the terms:
300 + -7x + 0.02x2 = 0

Solving
300 + -7x + 0.02x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.02'.
15000 + -350x + x2 = 0

Move the constant term to the right:

Add '-15000' to each side of the equation.
15000 + -350x + -15000 + x2 = 0 + -15000

Reorder the terms:
15000 + -15000 + -350x + x2 = 0 + -15000

Combine like terms: 15000 + -15000 = 0
0 + -350x + x2 = 0 + -15000
-350x + x2 = 0 + -15000

Combine like terms: 0 + -15000 = -15000
-350x + x2 = -15000

The x term is -350x.  Take half its coefficient (-175).
Square it (30625) and add it to both sides.

Add '30625' to each side of the equation.
-350x + 30625 + x2 = -15000 + 30625

Reorder the terms:
30625 + -350x + x2 = -15000 + 30625

Combine like terms: -15000 + 30625 = 15625
30625 + -350x + x2 = 15625

Factor a perfect square on the left side:
(x + -175)(x + -175) = 15625

Calculate the square root of the right side: 125

Break this problem into two subproblems by setting 
(x + -175) equal to 125 and -125.

Subproblem 1

x + -175 = 125 Simplifying x + -175 = 125 Reorder the terms: -175 + x = 125 Solving -175 + x = 125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '175' to each side of the equation. -175 + 175 + x = 125 + 175 Combine like terms: -175 + 175 = 0 0 + x = 125 + 175 x = 125 + 175 Combine like terms: 125 + 175 = 300 x = 300 Simplifying x = 300

Subproblem 2

x + -175 = -125 Simplifying x + -175 = -125 Reorder the terms: -175 + x = -125 Solving -175 + x = -125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '175' to each side of the equation. -175 + 175 + x = -125 + 175 Combine like terms: -175 + 175 = 0 0 + x = -125 + 175 x = -125 + 175 Combine like terms: -125 + 175 = 50 x = 50 Simplifying x = 50

Solution

The solution to the problem is based on the solutions from the subproblems. x = {300, 50}

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