13.44x^2-x-2=0

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Solution for 13.44x^2-x-2=0 equation:


Simplifying
13.44x2 + -1x + -2 = 0

Reorder the terms:
-2 + -1x + 13.44x2 = 0

Solving
-2 + -1x + 13.44x2 = 0

Solving for variable 'x'.

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

Divide each side by '13.44'.
-0.1488095238 + -0.0744047619x + x2 = 0

Move the constant term to the right:

Add '0.1488095238' to each side of the equation.
-0.1488095238 + -0.0744047619x + 0.1488095238 + x2 = 0 + 0.1488095238

Reorder the terms:
-0.1488095238 + 0.1488095238 + -0.0744047619x + x2 = 0 + 0.1488095238

Combine like terms: -0.1488095238 + 0.1488095238 = 0.0000000000
0.0000000000 + -0.0744047619x + x2 = 0 + 0.1488095238
-0.0744047619x + x2 = 0 + 0.1488095238

Combine like terms: 0 + 0.1488095238 = 0.1488095238
-0.0744047619x + x2 = 0.1488095238

The x term is -0.0744047619x.  Take half its coefficient (-0.03720238095).
Square it (0.001384017148) and add it to both sides.

Add '0.001384017148' to each side of the equation.
-0.0744047619x + 0.001384017148 + x2 = 0.1488095238 + 0.001384017148

Reorder the terms:
0.001384017148 + -0.0744047619x + x2 = 0.1488095238 + 0.001384017148

Combine like terms: 0.1488095238 + 0.001384017148 = 0.150193540948
0.001384017148 + -0.0744047619x + x2 = 0.150193540948

Factor a perfect square on the left side:
(x + -0.03720238095)(x + -0.03720238095) = 0.150193540948

Calculate the square root of the right side: 0.387548114

Break this problem into two subproblems by setting 
(x + -0.03720238095) equal to 0.387548114 and -0.387548114.

Subproblem 1

x + -0.03720238095 = 0.387548114 Simplifying x + -0.03720238095 = 0.387548114 Reorder the terms: -0.03720238095 + x = 0.387548114 Solving -0.03720238095 + x = 0.387548114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03720238095' to each side of the equation. -0.03720238095 + 0.03720238095 + x = 0.387548114 + 0.03720238095 Combine like terms: -0.03720238095 + 0.03720238095 = 0.00000000000 0.00000000000 + x = 0.387548114 + 0.03720238095 x = 0.387548114 + 0.03720238095 Combine like terms: 0.387548114 + 0.03720238095 = 0.42475049495 x = 0.42475049495 Simplifying x = 0.42475049495

Subproblem 2

x + -0.03720238095 = -0.387548114 Simplifying x + -0.03720238095 = -0.387548114 Reorder the terms: -0.03720238095 + x = -0.387548114 Solving -0.03720238095 + x = -0.387548114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.03720238095' to each side of the equation. -0.03720238095 + 0.03720238095 + x = -0.387548114 + 0.03720238095 Combine like terms: -0.03720238095 + 0.03720238095 = 0.00000000000 0.00000000000 + x = -0.387548114 + 0.03720238095 x = -0.387548114 + 0.03720238095 Combine like terms: -0.387548114 + 0.03720238095 = -0.35034573305 x = -0.35034573305 Simplifying x = -0.35034573305

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.42475049495, -0.35034573305}

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