-0.08x^2+1.6x-1.5=0

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Solution for -0.08x^2+1.6x-1.5=0 equation:


Simplifying
-0.08x2 + 1.6x + -1.5 = 0

Reorder the terms:
-1.5 + 1.6x + -0.08x2 = 0

Solving
-1.5 + 1.6x + -0.08x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.08 the coefficient of the squared term: 

Divide each side by '-0.08'.
18.75 + -20x + x2 = 0

Move the constant term to the right:

Add '-18.75' to each side of the equation.
18.75 + -20x + -18.75 + x2 = 0 + -18.75

Reorder the terms:
18.75 + -18.75 + -20x + x2 = 0 + -18.75

Combine like terms: 18.75 + -18.75 = 0.00
0.00 + -20x + x2 = 0 + -18.75
-20x + x2 = 0 + -18.75

Combine like terms: 0 + -18.75 = -18.75
-20x + x2 = -18.75

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 = -18.75 + 100

Reorder the terms:
100 + -20x + x2 = -18.75 + 100

Combine like terms: -18.75 + 100 = 81.25
100 + -20x + x2 = 81.25

Factor a perfect square on the left side:
(x + -10)(x + -10) = 81.25

Calculate the square root of the right side: 9.013878189

Break this problem into two subproblems by setting 
(x + -10) equal to 9.013878189 and -9.013878189.

Subproblem 1

x + -10 = 9.013878189 Simplifying x + -10 = 9.013878189 Reorder the terms: -10 + x = 9.013878189 Solving -10 + x = 9.013878189 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 = 9.013878189 + 10 Combine like terms: -10 + 10 = 0 0 + x = 9.013878189 + 10 x = 9.013878189 + 10 Combine like terms: 9.013878189 + 10 = 19.013878189 x = 19.013878189 Simplifying x = 19.013878189

Subproblem 2

x + -10 = -9.013878189 Simplifying x + -10 = -9.013878189 Reorder the terms: -10 + x = -9.013878189 Solving -10 + x = -9.013878189 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 = -9.013878189 + 10 Combine like terms: -10 + 10 = 0 0 + x = -9.013878189 + 10 x = -9.013878189 + 10 Combine like terms: -9.013878189 + 10 = 0.986121811 x = 0.986121811 Simplifying x = 0.986121811

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.013878189, 0.986121811}

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