2x^2+14x+24=9

Simple and best practice solution for 2x^2+14x+24=9 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x^2+14x+24=9 equation:


Simplifying
2x2 + 14x + 24 = 9

Reorder the terms:
24 + 14x + 2x2 = 9

Solving
24 + 14x + 2x2 = 9

Solving for variable 'x'.

Reorder the terms:
24 + -9 + 14x + 2x2 = 9 + -9

Combine like terms: 24 + -9 = 15
15 + 14x + 2x2 = 9 + -9

Combine like terms: 9 + -9 = 0
15 + 14x + 2x2 = 0

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

Divide each side by '2'.
7.5 + 7x + x2 = 0

Move the constant term to the right:

Add '-7.5' to each side of the equation.
7.5 + 7x + -7.5 + x2 = 0 + -7.5

Reorder the terms:
7.5 + -7.5 + 7x + x2 = 0 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + 7x + x2 = 0 + -7.5
7x + x2 = 0 + -7.5

Combine like terms: 0 + -7.5 = -7.5
7x + x2 = -7.5

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = -7.5 + 12.25

Reorder the terms:
12.25 + 7x + x2 = -7.5 + 12.25

Combine like terms: -7.5 + 12.25 = 4.75
12.25 + 7x + x2 = 4.75

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = 4.75

Calculate the square root of the right side: 2.179449472

Break this problem into two subproblems by setting 
(x + 3.5) equal to 2.179449472 and -2.179449472.

Subproblem 1

x + 3.5 = 2.179449472 Simplifying x + 3.5 = 2.179449472 Reorder the terms: 3.5 + x = 2.179449472 Solving 3.5 + x = 2.179449472 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 2.179449472 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 2.179449472 + -3.5 x = 2.179449472 + -3.5 Combine like terms: 2.179449472 + -3.5 = -1.320550528 x = -1.320550528 Simplifying x = -1.320550528

Subproblem 2

x + 3.5 = -2.179449472 Simplifying x + 3.5 = -2.179449472 Reorder the terms: 3.5 + x = -2.179449472 Solving 3.5 + x = -2.179449472 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -2.179449472 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -2.179449472 + -3.5 x = -2.179449472 + -3.5 Combine like terms: -2.179449472 + -3.5 = -5.679449472 x = -5.679449472 Simplifying x = -5.679449472

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.320550528, -5.679449472}

See similar equations:

| 17=4v+13 | | 1x=2-3 | | -5y-10=0 | | 0=8x+32 | | 1.6t+4.4=1.2 | | 4z+13=4 | | 3(x+11)-1=2(x+50) | | 4u+19=-17 | | 0.10(x+20)+0.70x=18 | | 0.8u+2.8=-3.6 | | -10=-8u-12 | | 6v+13=0 | | -3u-19=0 | | -3(v+5)=-4(v+5) | | 45x+12=0 | | -2n+4(-n+4)=-5(-n+1)-1 | | 0=-3u+18 | | Q-(q-2)=2 | | 4(n-3)=6+9n | | 4+11x=144+x | | 5+a=3 | | 0.13+2.7b=b+1.6b | | 4+11=144+x | | 0=3u+18 | | -8x+12=0 | | -4(3-5x)=4(x-3) | | 5(3a+3)=2(-3a-3) | | 14=-4t+4 | | 4m+9=2m-7 | | 8y+3=-14 | | 4x-3(2-x)+3=0 | | 3n+5=5+3n |

Equations solver categories