16x^2-45x-6=0

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Solution for 16x^2-45x-6=0 equation:


Simplifying
16x2 + -45x + -6 = 0

Reorder the terms:
-6 + -45x + 16x2 = 0

Solving
-6 + -45x + 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'.
-0.375 + -2.8125x + x2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + -2.8125x + 0.375 + x2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + -2.8125x + x2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + -2.8125x + x2 = 0 + 0.375
-2.8125x + x2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
-2.8125x + x2 = 0.375

The x term is -2.8125x.  Take half its coefficient (-1.40625).
Square it (1.977539063) and add it to both sides.

Add '1.977539063' to each side of the equation.
-2.8125x + 1.977539063 + x2 = 0.375 + 1.977539063

Reorder the terms:
1.977539063 + -2.8125x + x2 = 0.375 + 1.977539063

Combine like terms: 0.375 + 1.977539063 = 2.352539063
1.977539063 + -2.8125x + x2 = 2.352539063

Factor a perfect square on the left side:
(x + -1.40625)(x + -1.40625) = 2.352539063

Calculate the square root of the right side: 1.533798899

Break this problem into two subproblems by setting 
(x + -1.40625) equal to 1.533798899 and -1.533798899.

Subproblem 1

x + -1.40625 = 1.533798899 Simplifying x + -1.40625 = 1.533798899 Reorder the terms: -1.40625 + x = 1.533798899 Solving -1.40625 + x = 1.533798899 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = 1.533798899 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = 1.533798899 + 1.40625 x = 1.533798899 + 1.40625 Combine like terms: 1.533798899 + 1.40625 = 2.940048899 x = 2.940048899 Simplifying x = 2.940048899

Subproblem 2

x + -1.40625 = -1.533798899 Simplifying x + -1.40625 = -1.533798899 Reorder the terms: -1.40625 + x = -1.533798899 Solving -1.40625 + x = -1.533798899 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = -1.533798899 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = -1.533798899 + 1.40625 x = -1.533798899 + 1.40625 Combine like terms: -1.533798899 + 1.40625 = -0.127548899 x = -0.127548899 Simplifying x = -0.127548899

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.940048899, -0.127548899}

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