36=2x^2+6x+9

Simple and best practice solution for 36=2x^2+6x+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 36=2x^2+6x+9 equation:


Simplifying
36 = 2x2 + 6x + 9

Reorder the terms:
36 = 9 + 6x + 2x2

Solving
36 = 9 + 6x + 2x2

Solving for variable 'x'.

Combine like terms: 36 + -9 = 27
27 + -6x + -2x2 = 9 + 6x + 2x2 + -9 + -6x + -2x2

Reorder the terms:
27 + -6x + -2x2 = 9 + -9 + 6x + -6x + 2x2 + -2x2

Combine like terms: 9 + -9 = 0
27 + -6x + -2x2 = 0 + 6x + -6x + 2x2 + -2x2
27 + -6x + -2x2 = 6x + -6x + 2x2 + -2x2

Combine like terms: 6x + -6x = 0
27 + -6x + -2x2 = 0 + 2x2 + -2x2
27 + -6x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
27 + -6x + -2x2 = 0

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

Divide each side by '-2'.
-13.5 + 3x + x2 = 0

Move the constant term to the right:

Add '13.5' to each side of the equation.
-13.5 + 3x + 13.5 + x2 = 0 + 13.5

Reorder the terms:
-13.5 + 13.5 + 3x + x2 = 0 + 13.5

Combine like terms: -13.5 + 13.5 = 0.0
0.0 + 3x + x2 = 0 + 13.5
3x + x2 = 0 + 13.5

Combine like terms: 0 + 13.5 = 13.5
3x + x2 = 13.5

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 = 13.5 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 13.5 + 2.25

Combine like terms: 13.5 + 2.25 = 15.75
2.25 + 3x + x2 = 15.75

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 15.75

Calculate the square root of the right side: 3.968626967

Break this problem into two subproblems by setting 
(x + 1.5) equal to 3.968626967 and -3.968626967.

Subproblem 1

x + 1.5 = 3.968626967 Simplifying x + 1.5 = 3.968626967 Reorder the terms: 1.5 + x = 3.968626967 Solving 1.5 + x = 3.968626967 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 = 3.968626967 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 3.968626967 + -1.5 x = 3.968626967 + -1.5 Combine like terms: 3.968626967 + -1.5 = 2.468626967 x = 2.468626967 Simplifying x = 2.468626967

Subproblem 2

x + 1.5 = -3.968626967 Simplifying x + 1.5 = -3.968626967 Reorder the terms: 1.5 + x = -3.968626967 Solving 1.5 + x = -3.968626967 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 = -3.968626967 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -3.968626967 + -1.5 x = -3.968626967 + -1.5 Combine like terms: -3.968626967 + -1.5 = -5.468626967 x = -5.468626967 Simplifying x = -5.468626967

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.468626967, -5.468626967}

See similar equations:

| 4p-31+p+13=P+50 | | 3=-6v+3(v+8) | | -3(z+2)=24 | | 2n^2+n-36=0 | | x+3x+5=12 | | -2(c-1)=18 | | 4x^2+39x+171=0 | | w+12+2w+2=w+50 | | 2.5x-6=-4-3.5 | | -9x^9y^8(-4x^6z^7+3y^3+3z^8)= | | x^2+y^2-2x-8y-47=0 | | -9x^9y^8(-4x^6z^7+3y^3+3z^8)= | | 15x-48+5x=13x | | (x+4)2+(y+4)2=32 | | xcubed-2xsquared+1=0 | | x-2y=28 | | 6=2-8(1-y) | | (x-5)2+(y-5)2=27 | | xcubed-2quared+1=0 | | 44+q+41=8q+28 | | (x+2)2+y^2=100 | | 2w-5+33=w+48 | | y^2-7y-60=0 | | x^2+(y+2)2=49 | | (x-7)2+y^2=64 | | q+45+45=14q-40 | | x^2+(y-5)2=36 | | 9x-1=7y+8 | | (x-8)2+(y+7)2=225 | | 60h=270 | | 0.9(6x+4)=0.7-(x-3) | | 9x-1=3x+4t |

Equations solver categories