-16x^2+22.9x+12=0

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Solution for -16x^2+22.9x+12=0 equation:


Simplifying
-16x2 + 22.9x + 12 = 0

Reorder the terms:
12 + 22.9x + -16x2 = 0

Solving
12 + 22.9x + -16x2 = 0

Solving for variable 'x'.

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

Divide each side by '-16'.
-0.75 + -1.43125x + x2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -1.43125x + 0.75 + x2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -1.43125x + x2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -1.43125x + x2 = 0 + 0.75
-1.43125x + x2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-1.43125x + x2 = 0.75

The x term is -1.43125x.  Take half its coefficient (-0.715625).
Square it (0.5121191406) and add it to both sides.

Add '0.5121191406' to each side of the equation.
-1.43125x + 0.5121191406 + x2 = 0.75 + 0.5121191406

Reorder the terms:
0.5121191406 + -1.43125x + x2 = 0.75 + 0.5121191406

Combine like terms: 0.75 + 0.5121191406 = 1.2621191406
0.5121191406 + -1.43125x + x2 = 1.2621191406

Factor a perfect square on the left side:
(x + -0.715625)(x + -0.715625) = 1.2621191406

Calculate the square root of the right side: 1.12344076

Break this problem into two subproblems by setting 
(x + -0.715625) equal to 1.12344076 and -1.12344076.

Subproblem 1

x + -0.715625 = 1.12344076 Simplifying x + -0.715625 = 1.12344076 Reorder the terms: -0.715625 + x = 1.12344076 Solving -0.715625 + x = 1.12344076 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.715625' to each side of the equation. -0.715625 + 0.715625 + x = 1.12344076 + 0.715625 Combine like terms: -0.715625 + 0.715625 = 0.000000 0.000000 + x = 1.12344076 + 0.715625 x = 1.12344076 + 0.715625 Combine like terms: 1.12344076 + 0.715625 = 1.83906576 x = 1.83906576 Simplifying x = 1.83906576

Subproblem 2

x + -0.715625 = -1.12344076 Simplifying x + -0.715625 = -1.12344076 Reorder the terms: -0.715625 + x = -1.12344076 Solving -0.715625 + x = -1.12344076 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.715625' to each side of the equation. -0.715625 + 0.715625 + x = -1.12344076 + 0.715625 Combine like terms: -0.715625 + 0.715625 = 0.000000 0.000000 + x = -1.12344076 + 0.715625 x = -1.12344076 + 0.715625 Combine like terms: -1.12344076 + 0.715625 = -0.40781576 x = -0.40781576 Simplifying x = -0.40781576

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.83906576, -0.40781576}

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