16x^2+50x+15=0

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Solution for 16x^2+50x+15=0 equation:


Simplifying
16x2 + 50x + 15 = 0

Reorder the terms:
15 + 50x + 16x2 = 0

Solving
15 + 50x + 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'.
0.9375 + 3.125x + x2 = 0

Move the constant term to the right:

Add '-0.9375' to each side of the equation.
0.9375 + 3.125x + -0.9375 + x2 = 0 + -0.9375

Reorder the terms:
0.9375 + -0.9375 + 3.125x + x2 = 0 + -0.9375

Combine like terms: 0.9375 + -0.9375 = 0.0000
0.0000 + 3.125x + x2 = 0 + -0.9375
3.125x + x2 = 0 + -0.9375

Combine like terms: 0 + -0.9375 = -0.9375
3.125x + x2 = -0.9375

The x term is 3.125x.  Take half its coefficient (1.5625).
Square it (2.44140625) and add it to both sides.

Add '2.44140625' to each side of the equation.
3.125x + 2.44140625 + x2 = -0.9375 + 2.44140625

Reorder the terms:
2.44140625 + 3.125x + x2 = -0.9375 + 2.44140625

Combine like terms: -0.9375 + 2.44140625 = 1.50390625
2.44140625 + 3.125x + x2 = 1.50390625

Factor a perfect square on the left side:
(x + 1.5625)(x + 1.5625) = 1.50390625

Calculate the square root of the right side: 1.226338554

Break this problem into two subproblems by setting 
(x + 1.5625) equal to 1.226338554 and -1.226338554.

Subproblem 1

x + 1.5625 = 1.226338554 Simplifying x + 1.5625 = 1.226338554 Reorder the terms: 1.5625 + x = 1.226338554 Solving 1.5625 + x = 1.226338554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5625' to each side of the equation. 1.5625 + -1.5625 + x = 1.226338554 + -1.5625 Combine like terms: 1.5625 + -1.5625 = 0.0000 0.0000 + x = 1.226338554 + -1.5625 x = 1.226338554 + -1.5625 Combine like terms: 1.226338554 + -1.5625 = -0.336161446 x = -0.336161446 Simplifying x = -0.336161446

Subproblem 2

x + 1.5625 = -1.226338554 Simplifying x + 1.5625 = -1.226338554 Reorder the terms: 1.5625 + x = -1.226338554 Solving 1.5625 + x = -1.226338554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5625' to each side of the equation. 1.5625 + -1.5625 + x = -1.226338554 + -1.5625 Combine like terms: 1.5625 + -1.5625 = 0.0000 0.0000 + x = -1.226338554 + -1.5625 x = -1.226338554 + -1.5625 Combine like terms: -1.226338554 + -1.5625 = -2.788838554 x = -2.788838554 Simplifying x = -2.788838554

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.336161446, -2.788838554}

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