-16x^2+16x+0=3.96

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Solution for -16x^2+16x+0=3.96 equation:


Simplifying
-16x2 + 16x + 0 = 3.96

Reorder the terms:
0 + 16x + -16x2 = 3.96
Remove the zero:
16x + -16x2 = 3.96

Solving
16x + -16x2 = 3.96

Solving for variable 'x'.

Reorder the terms:
-3.96 + 16x + -16x2 = 3.96 + -3.96

Combine like terms: 3.96 + -3.96 = 0.00
-3.96 + 16x + -16x2 = 0.00

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
0.2475 + -1x + x2 = 0.00

Move the constant term to the right:

Add '-0.2475' to each side of the equation.
0.2475 + -1x + -0.2475 + x2 = 0.00 + -0.2475

Reorder the terms:
0.2475 + -0.2475 + -1x + x2 = 0.00 + -0.2475

Combine like terms: 0.2475 + -0.2475 = 0.0000
0.0000 + -1x + x2 = 0.00 + -0.2475
-1x + x2 = 0.00 + -0.2475

Combine like terms: 0.00 + -0.2475 = -0.2475
-1x + x2 = -0.2475

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = -0.2475 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -0.2475 + 0.25

Combine like terms: -0.2475 + 0.25 = 0.0025
0.25 + -1x + x2 = 0.0025

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 0.0025

Calculate the square root of the right side: 0.05

Break this problem into two subproblems by setting 
(x + -0.5) equal to 0.05 and -0.05.

Subproblem 1

x + -0.5 = 0.05 Simplifying x + -0.5 = 0.05 Reorder the terms: -0.5 + x = 0.05 Solving -0.5 + x = 0.05 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 0.05 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 0.05 + 0.5 x = 0.05 + 0.5 Combine like terms: 0.05 + 0.5 = 0.55 x = 0.55 Simplifying x = 0.55

Subproblem 2

x + -0.5 = -0.05 Simplifying x + -0.5 = -0.05 Reorder the terms: -0.5 + x = -0.05 Solving -0.5 + x = -0.05 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -0.05 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -0.05 + 0.5 x = -0.05 + 0.5 Combine like terms: -0.05 + 0.5 = 0.45 x = 0.45 Simplifying x = 0.45

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.55, 0.45}

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