7x^2+23x-48=0

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Solution for 7x^2+23x-48=0 equation:


Simplifying
7x2 + 23x + -48 = 0

Reorder the terms:
-48 + 23x + 7x2 = 0

Solving
-48 + 23x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
-6.857142857 + 3.285714286x + x2 = 0

Move the constant term to the right:

Add '6.857142857' to each side of the equation.
-6.857142857 + 3.285714286x + 6.857142857 + x2 = 0 + 6.857142857

Reorder the terms:
-6.857142857 + 6.857142857 + 3.285714286x + x2 = 0 + 6.857142857

Combine like terms: -6.857142857 + 6.857142857 = 0.000000000
0.000000000 + 3.285714286x + x2 = 0 + 6.857142857
3.285714286x + x2 = 0 + 6.857142857

Combine like terms: 0 + 6.857142857 = 6.857142857
3.285714286x + x2 = 6.857142857

The x term is 3.285714286x.  Take half its coefficient (1.642857143).
Square it (2.698979592) and add it to both sides.

Add '2.698979592' to each side of the equation.
3.285714286x + 2.698979592 + x2 = 6.857142857 + 2.698979592

Reorder the terms:
2.698979592 + 3.285714286x + x2 = 6.857142857 + 2.698979592

Combine like terms: 6.857142857 + 2.698979592 = 9.556122449
2.698979592 + 3.285714286x + x2 = 9.556122449

Factor a perfect square on the left side:
(x + 1.642857143)(x + 1.642857143) = 9.556122449

Calculate the square root of the right side: 3.091297858

Break this problem into two subproblems by setting 
(x + 1.642857143) equal to 3.091297858 and -3.091297858.

Subproblem 1

x + 1.642857143 = 3.091297858 Simplifying x + 1.642857143 = 3.091297858 Reorder the terms: 1.642857143 + x = 3.091297858 Solving 1.642857143 + x = 3.091297858 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.642857143' to each side of the equation. 1.642857143 + -1.642857143 + x = 3.091297858 + -1.642857143 Combine like terms: 1.642857143 + -1.642857143 = 0.000000000 0.000000000 + x = 3.091297858 + -1.642857143 x = 3.091297858 + -1.642857143 Combine like terms: 3.091297858 + -1.642857143 = 1.448440715 x = 1.448440715 Simplifying x = 1.448440715

Subproblem 2

x + 1.642857143 = -3.091297858 Simplifying x + 1.642857143 = -3.091297858 Reorder the terms: 1.642857143 + x = -3.091297858 Solving 1.642857143 + x = -3.091297858 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.642857143' to each side of the equation. 1.642857143 + -1.642857143 + x = -3.091297858 + -1.642857143 Combine like terms: 1.642857143 + -1.642857143 = 0.000000000 0.000000000 + x = -3.091297858 + -1.642857143 x = -3.091297858 + -1.642857143 Combine like terms: -3.091297858 + -1.642857143 = -4.734155001 x = -4.734155001 Simplifying x = -4.734155001

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.448440715, -4.734155001}

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