0.05x^2-16.9x=34

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Solution for 0.05x^2-16.9x=34 equation:


Simplifying
0.05x2 + -16.9x = 34

Reorder the terms:
-16.9x + 0.05x2 = 34

Solving
-16.9x + 0.05x2 = 34

Solving for variable 'x'.

Reorder the terms:
-34 + -16.9x + 0.05x2 = 34 + -34

Combine like terms: 34 + -34 = 0
-34 + -16.9x + 0.05x2 = 0

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

Divide each side by '0.05'.
-680 + -338x + x2 = 0

Move the constant term to the right:

Add '680' to each side of the equation.
-680 + -338x + 680 + x2 = 0 + 680

Reorder the terms:
-680 + 680 + -338x + x2 = 0 + 680

Combine like terms: -680 + 680 = 0
0 + -338x + x2 = 0 + 680
-338x + x2 = 0 + 680

Combine like terms: 0 + 680 = 680
-338x + x2 = 680

The x term is -338x.  Take half its coefficient (-169).
Square it (28561) and add it to both sides.

Add '28561' to each side of the equation.
-338x + 28561 + x2 = 680 + 28561

Reorder the terms:
28561 + -338x + x2 = 680 + 28561

Combine like terms: 680 + 28561 = 29241
28561 + -338x + x2 = 29241

Factor a perfect square on the left side:
(x + -169)(x + -169) = 29241

Calculate the square root of the right side: 171

Break this problem into two subproblems by setting 
(x + -169) equal to 171 and -171.

Subproblem 1

x + -169 = 171 Simplifying x + -169 = 171 Reorder the terms: -169 + x = 171 Solving -169 + x = 171 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '169' to each side of the equation. -169 + 169 + x = 171 + 169 Combine like terms: -169 + 169 = 0 0 + x = 171 + 169 x = 171 + 169 Combine like terms: 171 + 169 = 340 x = 340 Simplifying x = 340

Subproblem 2

x + -169 = -171 Simplifying x + -169 = -171 Reorder the terms: -169 + x = -171 Solving -169 + x = -171 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '169' to each side of the equation. -169 + 169 + x = -171 + 169 Combine like terms: -169 + 169 = 0 0 + x = -171 + 169 x = -171 + 169 Combine like terms: -171 + 169 = -2 x = -2 Simplifying x = -2

Solution

The solution to the problem is based on the solutions from the subproblems. x = {340, -2}

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