4x^2-.5x-154=0

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Solution for 4x^2-.5x-154=0 equation:


Simplifying
4x2 + -0.5x + -154 = 0

Reorder the terms:
-154 + -0.5x + 4x2 = 0

Solving
-154 + -0.5x + 4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
-38.5 + -0.125x + x2 = 0

Move the constant term to the right:

Add '38.5' to each side of the equation.
-38.5 + -0.125x + 38.5 + x2 = 0 + 38.5

Reorder the terms:
-38.5 + 38.5 + -0.125x + x2 = 0 + 38.5

Combine like terms: -38.5 + 38.5 = 0.0
0.0 + -0.125x + x2 = 0 + 38.5
-0.125x + x2 = 0 + 38.5

Combine like terms: 0 + 38.5 = 38.5
-0.125x + x2 = 38.5

The x term is -0.125x.  Take half its coefficient (-0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
-0.125x + 0.00390625 + x2 = 38.5 + 0.00390625

Reorder the terms:
0.00390625 + -0.125x + x2 = 38.5 + 0.00390625

Combine like terms: 38.5 + 0.00390625 = 38.50390625
0.00390625 + -0.125x + x2 = 38.50390625

Factor a perfect square on the left side:
(x + -0.0625)(x + -0.0625) = 38.50390625

Calculate the square root of the right side: 6.20515159

Break this problem into two subproblems by setting 
(x + -0.0625) equal to 6.20515159 and -6.20515159.

Subproblem 1

x + -0.0625 = 6.20515159 Simplifying x + -0.0625 = 6.20515159 Reorder the terms: -0.0625 + x = 6.20515159 Solving -0.0625 + x = 6.20515159 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + x = 6.20515159 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = 6.20515159 + 0.0625 x = 6.20515159 + 0.0625 Combine like terms: 6.20515159 + 0.0625 = 6.26765159 x = 6.26765159 Simplifying x = 6.26765159

Subproblem 2

x + -0.0625 = -6.20515159 Simplifying x + -0.0625 = -6.20515159 Reorder the terms: -0.0625 + x = -6.20515159 Solving -0.0625 + x = -6.20515159 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + x = -6.20515159 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = -6.20515159 + 0.0625 x = -6.20515159 + 0.0625 Combine like terms: -6.20515159 + 0.0625 = -6.14265159 x = -6.14265159 Simplifying x = -6.14265159

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.26765159, -6.14265159}

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