25x^2-74x-49=0

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Solution for 25x^2-74x-49=0 equation:


Simplifying
25x2 + -74x + -49 = 0

Reorder the terms:
-49 + -74x + 25x2 = 0

Solving
-49 + -74x + 25x2 = 0

Solving for variable 'x'.

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

Divide each side by '25'.
-1.96 + -2.96x + x2 = 0

Move the constant term to the right:

Add '1.96' to each side of the equation.
-1.96 + -2.96x + 1.96 + x2 = 0 + 1.96

Reorder the terms:
-1.96 + 1.96 + -2.96x + x2 = 0 + 1.96

Combine like terms: -1.96 + 1.96 = 0.00
0.00 + -2.96x + x2 = 0 + 1.96
-2.96x + x2 = 0 + 1.96

Combine like terms: 0 + 1.96 = 1.96
-2.96x + x2 = 1.96

The x term is -2.96x.  Take half its coefficient (-1.48).
Square it (2.1904) and add it to both sides.

Add '2.1904' to each side of the equation.
-2.96x + 2.1904 + x2 = 1.96 + 2.1904

Reorder the terms:
2.1904 + -2.96x + x2 = 1.96 + 2.1904

Combine like terms: 1.96 + 2.1904 = 4.1504
2.1904 + -2.96x + x2 = 4.1504

Factor a perfect square on the left side:
(x + -1.48)(x + -1.48) = 4.1504

Calculate the square root of the right side: 2.037253053

Break this problem into two subproblems by setting 
(x + -1.48) equal to 2.037253053 and -2.037253053.

Subproblem 1

x + -1.48 = 2.037253053 Simplifying x + -1.48 = 2.037253053 Reorder the terms: -1.48 + x = 2.037253053 Solving -1.48 + x = 2.037253053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.48' to each side of the equation. -1.48 + 1.48 + x = 2.037253053 + 1.48 Combine like terms: -1.48 + 1.48 = 0.00 0.00 + x = 2.037253053 + 1.48 x = 2.037253053 + 1.48 Combine like terms: 2.037253053 + 1.48 = 3.517253053 x = 3.517253053 Simplifying x = 3.517253053

Subproblem 2

x + -1.48 = -2.037253053 Simplifying x + -1.48 = -2.037253053 Reorder the terms: -1.48 + x = -2.037253053 Solving -1.48 + x = -2.037253053 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.48' to each side of the equation. -1.48 + 1.48 + x = -2.037253053 + 1.48 Combine like terms: -1.48 + 1.48 = 0.00 0.00 + x = -2.037253053 + 1.48 x = -2.037253053 + 1.48 Combine like terms: -2.037253053 + 1.48 = -0.557253053 x = -0.557253053 Simplifying x = -0.557253053

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.517253053, -0.557253053}

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