16x^2-55x-62=0

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Solution for 16x^2-55x-62=0 equation:


Simplifying
16x2 + -55x + -62 = 0

Reorder the terms:
-62 + -55x + 16x2 = 0

Solving
-62 + -55x + 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'.
-3.875 + -3.4375x + x2 = 0

Move the constant term to the right:

Add '3.875' to each side of the equation.
-3.875 + -3.4375x + 3.875 + x2 = 0 + 3.875

Reorder the terms:
-3.875 + 3.875 + -3.4375x + x2 = 0 + 3.875

Combine like terms: -3.875 + 3.875 = 0.000
0.000 + -3.4375x + x2 = 0 + 3.875
-3.4375x + x2 = 0 + 3.875

Combine like terms: 0 + 3.875 = 3.875
-3.4375x + x2 = 3.875

The x term is -3.4375x.  Take half its coefficient (-1.71875).
Square it (2.954101563) and add it to both sides.

Add '2.954101563' to each side of the equation.
-3.4375x + 2.954101563 + x2 = 3.875 + 2.954101563

Reorder the terms:
2.954101563 + -3.4375x + x2 = 3.875 + 2.954101563

Combine like terms: 3.875 + 2.954101563 = 6.829101563
2.954101563 + -3.4375x + x2 = 6.829101563

Factor a perfect square on the left side:
(x + -1.71875)(x + -1.71875) = 6.829101563

Calculate the square root of the right side: 2.613254975

Break this problem into two subproblems by setting 
(x + -1.71875) equal to 2.613254975 and -2.613254975.

Subproblem 1

x + -1.71875 = 2.613254975 Simplifying x + -1.71875 = 2.613254975 Reorder the terms: -1.71875 + x = 2.613254975 Solving -1.71875 + x = 2.613254975 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.71875' to each side of the equation. -1.71875 + 1.71875 + x = 2.613254975 + 1.71875 Combine like terms: -1.71875 + 1.71875 = 0.00000 0.00000 + x = 2.613254975 + 1.71875 x = 2.613254975 + 1.71875 Combine like terms: 2.613254975 + 1.71875 = 4.332004975 x = 4.332004975 Simplifying x = 4.332004975

Subproblem 2

x + -1.71875 = -2.613254975 Simplifying x + -1.71875 = -2.613254975 Reorder the terms: -1.71875 + x = -2.613254975 Solving -1.71875 + x = -2.613254975 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.71875' to each side of the equation. -1.71875 + 1.71875 + x = -2.613254975 + 1.71875 Combine like terms: -1.71875 + 1.71875 = 0.00000 0.00000 + x = -2.613254975 + 1.71875 x = -2.613254975 + 1.71875 Combine like terms: -2.613254975 + 1.71875 = -0.894504975 x = -0.894504975 Simplifying x = -0.894504975

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.332004975, -0.894504975}

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