7x^2+6x=24

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Solution for 7x^2+6x=24 equation:


Simplifying
7x2 + 6x = 24

Reorder the terms:
6x + 7x2 = 24

Solving
6x + 7x2 = 24

Solving for variable 'x'.

Reorder the terms:
-24 + 6x + 7x2 = 24 + -24

Combine like terms: 24 + -24 = 0
-24 + 6x + 7x2 = 0

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

Divide each side by '7'.
-3.428571429 + 0.8571428571x + x2 = 0

Move the constant term to the right:

Add '3.428571429' to each side of the equation.
-3.428571429 + 0.8571428571x + 3.428571429 + x2 = 0 + 3.428571429

Reorder the terms:
-3.428571429 + 3.428571429 + 0.8571428571x + x2 = 0 + 3.428571429

Combine like terms: -3.428571429 + 3.428571429 = 0.000000000
0.000000000 + 0.8571428571x + x2 = 0 + 3.428571429
0.8571428571x + x2 = 0 + 3.428571429

Combine like terms: 0 + 3.428571429 = 3.428571429
0.8571428571x + x2 = 3.428571429

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 = 3.428571429 + 0.1836734694

Reorder the terms:
0.1836734694 + 0.8571428571x + x2 = 3.428571429 + 0.1836734694

Combine like terms: 3.428571429 + 0.1836734694 = 3.6122448984
0.1836734694 + 0.8571428571x + x2 = 3.6122448984

Factor a perfect square on the left side:
(x + 0.4285714286)(x + 0.4285714286) = 3.6122448984

Calculate the square root of the right side: 1.900590671

Break this problem into two subproblems by setting 
(x + 0.4285714286) equal to 1.900590671 and -1.900590671.

Subproblem 1

x + 0.4285714286 = 1.900590671 Simplifying x + 0.4285714286 = 1.900590671 Reorder the terms: 0.4285714286 + x = 1.900590671 Solving 0.4285714286 + x = 1.900590671 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 = 1.900590671 + -0.4285714286 Combine like terms: 0.4285714286 + -0.4285714286 = 0.0000000000 0.0000000000 + x = 1.900590671 + -0.4285714286 x = 1.900590671 + -0.4285714286 Combine like terms: 1.900590671 + -0.4285714286 = 1.4720192424 x = 1.4720192424 Simplifying x = 1.4720192424

Subproblem 2

x + 0.4285714286 = -1.900590671 Simplifying x + 0.4285714286 = -1.900590671 Reorder the terms: 0.4285714286 + x = -1.900590671 Solving 0.4285714286 + x = -1.900590671 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 = -1.900590671 + -0.4285714286 Combine like terms: 0.4285714286 + -0.4285714286 = 0.0000000000 0.0000000000 + x = -1.900590671 + -0.4285714286 x = -1.900590671 + -0.4285714286 Combine like terms: -1.900590671 + -0.4285714286 = -2.3291620996 x = -2.3291620996 Simplifying x = -2.3291620996

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.4720192424, -2.3291620996}

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