0=-.08x^2+1.4x+32

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Solution for 0=-.08x^2+1.4x+32 equation:


Simplifying
0 = -0.08x2 + 1.4x + 32

Reorder the terms:
0 = 32 + 1.4x + -0.08x2

Solving
0 = 32 + 1.4x + -0.08x2

Solving for variable 'x'.

Combine like terms: 0 + -32 = -32
-32 + -1.4x + 0.08x2 = 32 + 1.4x + -0.08x2 + -32 + -1.4x + 0.08x2

Reorder the terms:
-32 + -1.4x + 0.08x2 = 32 + -32 + 1.4x + -1.4x + -0.08x2 + 0.08x2

Combine like terms: 32 + -32 = 0
-32 + -1.4x + 0.08x2 = 0 + 1.4x + -1.4x + -0.08x2 + 0.08x2
-32 + -1.4x + 0.08x2 = 1.4x + -1.4x + -0.08x2 + 0.08x2

Combine like terms: 1.4x + -1.4x = 0.0
-32 + -1.4x + 0.08x2 = 0.0 + -0.08x2 + 0.08x2
-32 + -1.4x + 0.08x2 = -0.08x2 + 0.08x2

Combine like terms: -0.08x2 + 0.08x2 = 0.00
-32 + -1.4x + 0.08x2 = 0.00

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

Divide each side by '0.08'.
-400 + -17.5x + x2 = 0

Move the constant term to the right:

Add '400' to each side of the equation.
-400 + -17.5x + 400 + x2 = 0 + 400

Reorder the terms:
-400 + 400 + -17.5x + x2 = 0 + 400

Combine like terms: -400 + 400 = 0
0 + -17.5x + x2 = 0 + 400
-17.5x + x2 = 0 + 400

Combine like terms: 0 + 400 = 400
-17.5x + x2 = 400

The x term is -17.5x.  Take half its coefficient (-8.75).
Square it (76.5625) and add it to both sides.

Add '76.5625' to each side of the equation.
-17.5x + 76.5625 + x2 = 400 + 76.5625

Reorder the terms:
76.5625 + -17.5x + x2 = 400 + 76.5625

Combine like terms: 400 + 76.5625 = 476.5625
76.5625 + -17.5x + x2 = 476.5625

Factor a perfect square on the left side:
(x + -8.75)(x + -8.75) = 476.5625

Calculate the square root of the right side: 21.830311496

Break this problem into two subproblems by setting 
(x + -8.75) equal to 21.830311496 and -21.830311496.

Subproblem 1

x + -8.75 = 21.830311496 Simplifying x + -8.75 = 21.830311496 Reorder the terms: -8.75 + x = 21.830311496 Solving -8.75 + x = 21.830311496 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.75' to each side of the equation. -8.75 + 8.75 + x = 21.830311496 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + x = 21.830311496 + 8.75 x = 21.830311496 + 8.75 Combine like terms: 21.830311496 + 8.75 = 30.580311496 x = 30.580311496 Simplifying x = 30.580311496

Subproblem 2

x + -8.75 = -21.830311496 Simplifying x + -8.75 = -21.830311496 Reorder the terms: -8.75 + x = -21.830311496 Solving -8.75 + x = -21.830311496 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.75' to each side of the equation. -8.75 + 8.75 + x = -21.830311496 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + x = -21.830311496 + 8.75 x = -21.830311496 + 8.75 Combine like terms: -21.830311496 + 8.75 = -13.080311496 x = -13.080311496 Simplifying x = -13.080311496

Solution

The solution to the problem is based on the solutions from the subproblems. x = {30.580311496, -13.080311496}

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