(7x^2-2x+24)+(2x^2+8x-73)=

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Solution for (7x^2-2x+24)+(2x^2+8x-73)= equation:


Simplifying
(7x2 + -2x + 24) + (2x2 + 8x + -73) = 0

Reorder the terms:
(24 + -2x + 7x2) + (2x2 + 8x + -73) = 0

Remove parenthesis around (24 + -2x + 7x2)
24 + -2x + 7x2 + (2x2 + 8x + -73) = 0

Reorder the terms:
24 + -2x + 7x2 + (-73 + 8x + 2x2) = 0

Remove parenthesis around (-73 + 8x + 2x2)
24 + -2x + 7x2 + -73 + 8x + 2x2 = 0

Reorder the terms:
24 + -73 + -2x + 8x + 7x2 + 2x2 = 0

Combine like terms: 24 + -73 = -49
-49 + -2x + 8x + 7x2 + 2x2 = 0

Combine like terms: -2x + 8x = 6x
-49 + 6x + 7x2 + 2x2 = 0

Combine like terms: 7x2 + 2x2 = 9x2
-49 + 6x + 9x2 = 0

Solving
-49 + 6x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-5.444444444 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '5.444444444' to each side of the equation.
-5.444444444 + 0.6666666667x + 5.444444444 + x2 = 0 + 5.444444444

Reorder the terms:
-5.444444444 + 5.444444444 + 0.6666666667x + x2 = 0 + 5.444444444

Combine like terms: -5.444444444 + 5.444444444 = 0.000000000
0.000000000 + 0.6666666667x + x2 = 0 + 5.444444444
0.6666666667x + x2 = 0 + 5.444444444

Combine like terms: 0 + 5.444444444 = 5.444444444
0.6666666667x + x2 = 5.444444444

The x term is 0.6666666667x.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667x + 0.1111111112 + x2 = 5.444444444 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667x + x2 = 5.444444444 + 0.1111111112

Combine like terms: 5.444444444 + 0.1111111112 = 5.5555555552
0.1111111112 + 0.6666666667x + x2 = 5.5555555552

Factor a perfect square on the left side:
(x + 0.3333333334)(x + 0.3333333334) = 5.5555555552

Calculate the square root of the right side: 2.357022604

Break this problem into two subproblems by setting 
(x + 0.3333333334) equal to 2.357022604 and -2.357022604.

Subproblem 1

x + 0.3333333334 = 2.357022604 Simplifying x + 0.3333333334 = 2.357022604 Reorder the terms: 0.3333333334 + x = 2.357022604 Solving 0.3333333334 + x = 2.357022604 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = 2.357022604 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = 2.357022604 + -0.3333333334 x = 2.357022604 + -0.3333333334 Combine like terms: 2.357022604 + -0.3333333334 = 2.0236892706 x = 2.0236892706 Simplifying x = 2.0236892706

Subproblem 2

x + 0.3333333334 = -2.357022604 Simplifying x + 0.3333333334 = -2.357022604 Reorder the terms: 0.3333333334 + x = -2.357022604 Solving 0.3333333334 + x = -2.357022604 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + x = -2.357022604 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + x = -2.357022604 + -0.3333333334 x = -2.357022604 + -0.3333333334 Combine like terms: -2.357022604 + -0.3333333334 = -2.6903559374 x = -2.6903559374 Simplifying x = -2.6903559374

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.0236892706, -2.6903559374}

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