7x^2+12x-4896=0

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Solution for 7x^2+12x-4896=0 equation:


Simplifying
7x2 + 12x + -4896 = 0

Reorder the terms:
-4896 + 12x + 7x2 = 0

Solving
-4896 + 12x + 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'.
-699.4285714 + 1.714285714x + x2 = 0

Move the constant term to the right:

Add '699.4285714' to each side of the equation.
-699.4285714 + 1.714285714x + 699.4285714 + x2 = 0 + 699.4285714

Reorder the terms:
-699.4285714 + 699.4285714 + 1.714285714x + x2 = 0 + 699.4285714

Combine like terms: -699.4285714 + 699.4285714 = 0.0000000
0.0000000 + 1.714285714x + x2 = 0 + 699.4285714
1.714285714x + x2 = 0 + 699.4285714

Combine like terms: 0 + 699.4285714 = 699.4285714
1.714285714x + x2 = 699.4285714

The x term is 1.714285714x.  Take half its coefficient (0.857142857).
Square it (0.7346938773) and add it to both sides.

Add '0.7346938773' to each side of the equation.
1.714285714x + 0.7346938773 + x2 = 699.4285714 + 0.7346938773

Reorder the terms:
0.7346938773 + 1.714285714x + x2 = 699.4285714 + 0.7346938773

Combine like terms: 699.4285714 + 0.7346938773 = 700.1632652773
0.7346938773 + 1.714285714x + x2 = 700.1632652773

Factor a perfect square on the left side:
(x + 0.857142857)(x + 0.857142857) = 700.1632652773

Calculate the square root of the right side: 26.460598354

Break this problem into two subproblems by setting 
(x + 0.857142857) equal to 26.460598354 and -26.460598354.

Subproblem 1

x + 0.857142857 = 26.460598354 Simplifying x + 0.857142857 = 26.460598354 Reorder the terms: 0.857142857 + x = 26.460598354 Solving 0.857142857 + x = 26.460598354 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.857142857' to each side of the equation. 0.857142857 + -0.857142857 + x = 26.460598354 + -0.857142857 Combine like terms: 0.857142857 + -0.857142857 = 0.000000000 0.000000000 + x = 26.460598354 + -0.857142857 x = 26.460598354 + -0.857142857 Combine like terms: 26.460598354 + -0.857142857 = 25.603455497 x = 25.603455497 Simplifying x = 25.603455497

Subproblem 2

x + 0.857142857 = -26.460598354 Simplifying x + 0.857142857 = -26.460598354 Reorder the terms: 0.857142857 + x = -26.460598354 Solving 0.857142857 + x = -26.460598354 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.857142857' to each side of the equation. 0.857142857 + -0.857142857 + x = -26.460598354 + -0.857142857 Combine like terms: 0.857142857 + -0.857142857 = 0.000000000 0.000000000 + x = -26.460598354 + -0.857142857 x = -26.460598354 + -0.857142857 Combine like terms: -26.460598354 + -0.857142857 = -27.317741211 x = -27.317741211 Simplifying x = -27.317741211

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.603455497, -27.317741211}

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