-4x^2+7x+41=0

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Solution for -4x^2+7x+41=0 equation:


Simplifying
-4x2 + 7x + 41 = 0

Reorder the terms:
41 + 7x + -4x2 = 0

Solving
41 + 7x + -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'.
-10.25 + -1.75x + x2 = 0

Move the constant term to the right:

Add '10.25' to each side of the equation.
-10.25 + -1.75x + 10.25 + x2 = 0 + 10.25

Reorder the terms:
-10.25 + 10.25 + -1.75x + x2 = 0 + 10.25

Combine like terms: -10.25 + 10.25 = 0.00
0.00 + -1.75x + x2 = 0 + 10.25
-1.75x + x2 = 0 + 10.25

Combine like terms: 0 + 10.25 = 10.25
-1.75x + x2 = 10.25

The x term is -1.75x.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75x + 0.765625 + x2 = 10.25 + 0.765625

Reorder the terms:
0.765625 + -1.75x + x2 = 10.25 + 0.765625

Combine like terms: 10.25 + 0.765625 = 11.015625
0.765625 + -1.75x + x2 = 11.015625

Factor a perfect square on the left side:
(x + -0.875)(x + -0.875) = 11.015625

Calculate the square root of the right side: 3.318979512

Break this problem into two subproblems by setting 
(x + -0.875) equal to 3.318979512 and -3.318979512.

Subproblem 1

x + -0.875 = 3.318979512 Simplifying x + -0.875 = 3.318979512 Reorder the terms: -0.875 + x = 3.318979512 Solving -0.875 + x = 3.318979512 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + x = 3.318979512 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + x = 3.318979512 + 0.875 x = 3.318979512 + 0.875 Combine like terms: 3.318979512 + 0.875 = 4.193979512 x = 4.193979512 Simplifying x = 4.193979512

Subproblem 2

x + -0.875 = -3.318979512 Simplifying x + -0.875 = -3.318979512 Reorder the terms: -0.875 + x = -3.318979512 Solving -0.875 + x = -3.318979512 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.875' to each side of the equation. -0.875 + 0.875 + x = -3.318979512 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.000 + x = -3.318979512 + 0.875 x = -3.318979512 + 0.875 Combine like terms: -3.318979512 + 0.875 = -2.443979512 x = -2.443979512 Simplifying x = -2.443979512

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.193979512, -2.443979512}

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