7x^2+6x-48=0

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Solution for 7x^2+6x-48=0 equation:


Simplifying
7x2 + 6x + -48 = 0

Reorder the terms:
-48 + 6x + 7x2 = 0

Solving
-48 + 6x + 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 + 0.8571428571x + x2 = 0

Move the constant term to the right:

Add '6.857142857' to each side of the equation.
-6.857142857 + 0.8571428571x + 6.857142857 + x2 = 0 + 6.857142857

Reorder the terms:
-6.857142857 + 6.857142857 + 0.8571428571x + x2 = 0 + 6.857142857

Combine like terms: -6.857142857 + 6.857142857 = 0.000000000
0.000000000 + 0.8571428571x + x2 = 0 + 6.857142857
0.8571428571x + x2 = 0 + 6.857142857

Combine like terms: 0 + 6.857142857 = 6.857142857
0.8571428571x + x2 = 6.857142857

The x term is 0.8571428571x.  Take half its coefficient (0.4285714286).
Square it (0.1836734694) and add it to both sides.

Add '0.1836734694' to each side of the equation.
0.8571428571x + 0.1836734694 + x2 = 6.857142857 + 0.1836734694

Reorder the terms:
0.1836734694 + 0.8571428571x + x2 = 6.857142857 + 0.1836734694

Combine like terms: 6.857142857 + 0.1836734694 = 7.0408163264
0.1836734694 + 0.8571428571x + x2 = 7.0408163264

Factor a perfect square on the left side:
(x + 0.4285714286)(x + 0.4285714286) = 7.0408163264

Calculate the square root of the right side: 2.65345366

Break this problem into two subproblems by setting 
(x + 0.4285714286) equal to 2.65345366 and -2.65345366.

Subproblem 1

x + 0.4285714286 = 2.65345366 Simplifying x + 0.4285714286 = 2.65345366 Reorder the terms: 0.4285714286 + x = 2.65345366 Solving 0.4285714286 + x = 2.65345366 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4285714286' to each side of the equation. 0.4285714286 + -0.4285714286 + x = 2.65345366 + -0.4285714286 Combine like terms: 0.4285714286 + -0.4285714286 = 0.0000000000 0.0000000000 + x = 2.65345366 + -0.4285714286 x = 2.65345366 + -0.4285714286 Combine like terms: 2.65345366 + -0.4285714286 = 2.2248822314 x = 2.2248822314 Simplifying x = 2.2248822314

Subproblem 2

x + 0.4285714286 = -2.65345366 Simplifying x + 0.4285714286 = -2.65345366 Reorder the terms: 0.4285714286 + x = -2.65345366 Solving 0.4285714286 + x = -2.65345366 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.4285714286' to each side of the equation. 0.4285714286 + -0.4285714286 + x = -2.65345366 + -0.4285714286 Combine like terms: 0.4285714286 + -0.4285714286 = 0.0000000000 0.0000000000 + x = -2.65345366 + -0.4285714286 x = -2.65345366 + -0.4285714286 Combine like terms: -2.65345366 + -0.4285714286 = -3.0820250886 x = -3.0820250886 Simplifying x = -3.0820250886

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.2248822314, -3.0820250886}

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