16x^2+19x-36=0

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Solution for 16x^2+19x-36=0 equation:


Simplifying
16x2 + 19x + -36 = 0

Reorder the terms:
-36 + 19x + 16x2 = 0

Solving
-36 + 19x + 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'.
-2.25 + 1.1875x + x2 = 0

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + 1.1875x + 2.25 + x2 = 0 + 2.25

Reorder the terms:
-2.25 + 2.25 + 1.1875x + x2 = 0 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
0.00 + 1.1875x + x2 = 0 + 2.25
1.1875x + x2 = 0 + 2.25

Combine like terms: 0 + 2.25 = 2.25
1.1875x + x2 = 2.25

The x term is 1.1875x.  Take half its coefficient (0.59375).
Square it (0.3525390625) and add it to both sides.

Add '0.3525390625' to each side of the equation.
1.1875x + 0.3525390625 + x2 = 2.25 + 0.3525390625

Reorder the terms:
0.3525390625 + 1.1875x + x2 = 2.25 + 0.3525390625

Combine like terms: 2.25 + 0.3525390625 = 2.6025390625
0.3525390625 + 1.1875x + x2 = 2.6025390625

Factor a perfect square on the left side:
(x + 0.59375)(x + 0.59375) = 2.6025390625

Calculate the square root of the right side: 1.613238687

Break this problem into two subproblems by setting 
(x + 0.59375) equal to 1.613238687 and -1.613238687.

Subproblem 1

x + 0.59375 = 1.613238687 Simplifying x + 0.59375 = 1.613238687 Reorder the terms: 0.59375 + x = 1.613238687 Solving 0.59375 + x = 1.613238687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.59375' to each side of the equation. 0.59375 + -0.59375 + x = 1.613238687 + -0.59375 Combine like terms: 0.59375 + -0.59375 = 0.00000 0.00000 + x = 1.613238687 + -0.59375 x = 1.613238687 + -0.59375 Combine like terms: 1.613238687 + -0.59375 = 1.019488687 x = 1.019488687 Simplifying x = 1.019488687

Subproblem 2

x + 0.59375 = -1.613238687 Simplifying x + 0.59375 = -1.613238687 Reorder the terms: 0.59375 + x = -1.613238687 Solving 0.59375 + x = -1.613238687 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.59375' to each side of the equation. 0.59375 + -0.59375 + x = -1.613238687 + -0.59375 Combine like terms: 0.59375 + -0.59375 = 0.00000 0.00000 + x = -1.613238687 + -0.59375 x = -1.613238687 + -0.59375 Combine like terms: -1.613238687 + -0.59375 = -2.206988687 x = -2.206988687 Simplifying x = -2.206988687

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.019488687, -2.206988687}

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