16x^2-3x-5=

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Solution for 16x^2-3x-5= equation:


Simplifying
16x2 + -3x + -5 = 0

Reorder the terms:
-5 + -3x + 16x2 = 0

Solving
-5 + -3x + 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'.
-0.3125 + -0.1875x + x2 = 0

Move the constant term to the right:

Add '0.3125' to each side of the equation.
-0.3125 + -0.1875x + 0.3125 + x2 = 0 + 0.3125

Reorder the terms:
-0.3125 + 0.3125 + -0.1875x + x2 = 0 + 0.3125

Combine like terms: -0.3125 + 0.3125 = 0.0000
0.0000 + -0.1875x + x2 = 0 + 0.3125
-0.1875x + x2 = 0 + 0.3125

Combine like terms: 0 + 0.3125 = 0.3125
-0.1875x + x2 = 0.3125

The x term is -0.1875x.  Take half its coefficient (-0.09375).
Square it (0.0087890625) and add it to both sides.

Add '0.0087890625' to each side of the equation.
-0.1875x + 0.0087890625 + x2 = 0.3125 + 0.0087890625

Reorder the terms:
0.0087890625 + -0.1875x + x2 = 0.3125 + 0.0087890625

Combine like terms: 0.3125 + 0.0087890625 = 0.3212890625
0.0087890625 + -0.1875x + x2 = 0.3212890625

Factor a perfect square on the left side:
(x + -0.09375)(x + -0.09375) = 0.3212890625

Calculate the square root of the right side: 0.566823661

Break this problem into two subproblems by setting 
(x + -0.09375) equal to 0.566823661 and -0.566823661.

Subproblem 1

x + -0.09375 = 0.566823661 Simplifying x + -0.09375 = 0.566823661 Reorder the terms: -0.09375 + x = 0.566823661 Solving -0.09375 + x = 0.566823661 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.09375' to each side of the equation. -0.09375 + 0.09375 + x = 0.566823661 + 0.09375 Combine like terms: -0.09375 + 0.09375 = 0.00000 0.00000 + x = 0.566823661 + 0.09375 x = 0.566823661 + 0.09375 Combine like terms: 0.566823661 + 0.09375 = 0.660573661 x = 0.660573661 Simplifying x = 0.660573661

Subproblem 2

x + -0.09375 = -0.566823661 Simplifying x + -0.09375 = -0.566823661 Reorder the terms: -0.09375 + x = -0.566823661 Solving -0.09375 + x = -0.566823661 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.09375' to each side of the equation. -0.09375 + 0.09375 + x = -0.566823661 + 0.09375 Combine like terms: -0.09375 + 0.09375 = 0.00000 0.00000 + x = -0.566823661 + 0.09375 x = -0.566823661 + 0.09375 Combine like terms: -0.566823661 + 0.09375 = -0.473073661 x = -0.473073661 Simplifying x = -0.473073661

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.660573661, -0.473073661}

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