16x^2+50x+3.5=0

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Solution for 16x^2+50x+3.5=0 equation:


Simplifying
16x2 + 50x + 3.5 = 0

Reorder the terms:
3.5 + 50x + 16x2 = 0

Solving
3.5 + 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'.
0.21875 + 3.125x + x2 = 0

Move the constant term to the right:

Add '-0.21875' to each side of the equation.
0.21875 + 3.125x + -0.21875 + x2 = 0 + -0.21875

Reorder the terms:
0.21875 + -0.21875 + 3.125x + x2 = 0 + -0.21875

Combine like terms: 0.21875 + -0.21875 = 0.00000
0.00000 + 3.125x + x2 = 0 + -0.21875
3.125x + x2 = 0 + -0.21875

Combine like terms: 0 + -0.21875 = -0.21875
3.125x + x2 = -0.21875

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 = -0.21875 + 2.44140625

Reorder the terms:
2.44140625 + 3.125x + x2 = -0.21875 + 2.44140625

Combine like terms: -0.21875 + 2.44140625 = 2.22265625
2.44140625 + 3.125x + x2 = 2.22265625

Factor a perfect square on the left side:
(x + 1.5625)(x + 1.5625) = 2.22265625

Calculate the square root of the right side: 1.490857555

Break this problem into two subproblems by setting 
(x + 1.5625) equal to 1.490857555 and -1.490857555.

Subproblem 1

x + 1.5625 = 1.490857555 Simplifying x + 1.5625 = 1.490857555 Reorder the terms: 1.5625 + x = 1.490857555 Solving 1.5625 + x = 1.490857555 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 = 1.490857555 + -1.5625 Combine like terms: 1.5625 + -1.5625 = 0.0000 0.0000 + x = 1.490857555 + -1.5625 x = 1.490857555 + -1.5625 Combine like terms: 1.490857555 + -1.5625 = -0.071642445 x = -0.071642445 Simplifying x = -0.071642445

Subproblem 2

x + 1.5625 = -1.490857555 Simplifying x + 1.5625 = -1.490857555 Reorder the terms: 1.5625 + x = -1.490857555 Solving 1.5625 + x = -1.490857555 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 = -1.490857555 + -1.5625 Combine like terms: 1.5625 + -1.5625 = 0.0000 0.0000 + x = -1.490857555 + -1.5625 x = -1.490857555 + -1.5625 Combine like terms: -1.490857555 + -1.5625 = -3.053357555 x = -3.053357555 Simplifying x = -3.053357555

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.071642445, -3.053357555}

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