3(2x+5)-x^2-3x+2+2+10=

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Solution for 3(2x+5)-x^2-3x+2+2+10= equation:


Simplifying
3(2x + 5) + -1x2 + -3x + 2 + 2 + 10 = 0

Reorder the terms:
3(5 + 2x) + -1x2 + -3x + 2 + 2 + 10 = 0
(5 * 3 + 2x * 3) + -1x2 + -3x + 2 + 2 + 10 = 0
(15 + 6x) + -1x2 + -3x + 2 + 2 + 10 = 0

Reorder the terms:
15 + 2 + 2 + 10 + 6x + -3x + -1x2 = 0

Combine like terms: 15 + 2 = 17
17 + 2 + 10 + 6x + -3x + -1x2 = 0

Combine like terms: 17 + 2 = 19
19 + 10 + 6x + -3x + -1x2 = 0

Combine like terms: 19 + 10 = 29
29 + 6x + -3x + -1x2 = 0

Combine like terms: 6x + -3x = 3x
29 + 3x + -1x2 = 0

Solving
29 + 3x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-29 + -3x + x2 = 0

Move the constant term to the right:

Add '29' to each side of the equation.
-29 + -3x + 29 + x2 = 0 + 29

Reorder the terms:
-29 + 29 + -3x + x2 = 0 + 29

Combine like terms: -29 + 29 = 0
0 + -3x + x2 = 0 + 29
-3x + x2 = 0 + 29

Combine like terms: 0 + 29 = 29
-3x + x2 = 29

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 29 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 29 + 2.25

Combine like terms: 29 + 2.25 = 31.25
2.25 + -3x + x2 = 31.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 31.25

Calculate the square root of the right side: 5.590169944

Break this problem into two subproblems by setting 
(x + -1.5) equal to 5.590169944 and -5.590169944.

Subproblem 1

x + -1.5 = 5.590169944 Simplifying x + -1.5 = 5.590169944 Reorder the terms: -1.5 + x = 5.590169944 Solving -1.5 + x = 5.590169944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 5.590169944 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 5.590169944 + 1.5 x = 5.590169944 + 1.5 Combine like terms: 5.590169944 + 1.5 = 7.090169944 x = 7.090169944 Simplifying x = 7.090169944

Subproblem 2

x + -1.5 = -5.590169944 Simplifying x + -1.5 = -5.590169944 Reorder the terms: -1.5 + x = -5.590169944 Solving -1.5 + x = -5.590169944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -5.590169944 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -5.590169944 + 1.5 x = -5.590169944 + 1.5 Combine like terms: -5.590169944 + 1.5 = -4.090169944 x = -4.090169944 Simplifying x = -4.090169944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.090169944, -4.090169944}

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