8x^2+7x=36x-9

Simple and best practice solution for 8x^2+7x=36x-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 8x^2+7x=36x-9 equation:


Simplifying
8x2 + 7x = 36x + -9

Reorder the terms:
7x + 8x2 = 36x + -9

Reorder the terms:
7x + 8x2 = -9 + 36x

Solving
7x + 8x2 = -9 + 36x

Solving for variable 'x'.

Reorder the terms:
9 + 7x + -36x + 8x2 = -9 + 36x + 9 + -36x

Combine like terms: 7x + -36x = -29x
9 + -29x + 8x2 = -9 + 36x + 9 + -36x

Reorder the terms:
9 + -29x + 8x2 = -9 + 9 + 36x + -36x

Combine like terms: -9 + 9 = 0
9 + -29x + 8x2 = 0 + 36x + -36x
9 + -29x + 8x2 = 36x + -36x

Combine like terms: 36x + -36x = 0
9 + -29x + 8x2 = 0

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

Divide each side by '8'.
1.125 + -3.625x + x2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + -3.625x + -1.125 + x2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + -3.625x + x2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + -3.625x + x2 = 0 + -1.125
-3.625x + x2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
-3.625x + x2 = -1.125

The x term is -3.625x.  Take half its coefficient (-1.8125).
Square it (3.28515625) and add it to both sides.

Add '3.28515625' to each side of the equation.
-3.625x + 3.28515625 + x2 = -1.125 + 3.28515625

Reorder the terms:
3.28515625 + -3.625x + x2 = -1.125 + 3.28515625

Combine like terms: -1.125 + 3.28515625 = 2.16015625
3.28515625 + -3.625x + x2 = 2.16015625

Factor a perfect square on the left side:
(x + -1.8125)(x + -1.8125) = 2.16015625

Calculate the square root of the right side: 1.469747002

Break this problem into two subproblems by setting 
(x + -1.8125) equal to 1.469747002 and -1.469747002.

Subproblem 1

x + -1.8125 = 1.469747002 Simplifying x + -1.8125 = 1.469747002 Reorder the terms: -1.8125 + x = 1.469747002 Solving -1.8125 + x = 1.469747002 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8125' to each side of the equation. -1.8125 + 1.8125 + x = 1.469747002 + 1.8125 Combine like terms: -1.8125 + 1.8125 = 0.0000 0.0000 + x = 1.469747002 + 1.8125 x = 1.469747002 + 1.8125 Combine like terms: 1.469747002 + 1.8125 = 3.282247002 x = 3.282247002 Simplifying x = 3.282247002

Subproblem 2

x + -1.8125 = -1.469747002 Simplifying x + -1.8125 = -1.469747002 Reorder the terms: -1.8125 + x = -1.469747002 Solving -1.8125 + x = -1.469747002 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8125' to each side of the equation. -1.8125 + 1.8125 + x = -1.469747002 + 1.8125 Combine like terms: -1.8125 + 1.8125 = 0.0000 0.0000 + x = -1.469747002 + 1.8125 x = -1.469747002 + 1.8125 Combine like terms: -1.469747002 + 1.8125 = 0.342752998 x = 0.342752998 Simplifying x = 0.342752998

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.282247002, 0.342752998}

See similar equations:

| -(7y+4)-(-6y-5)=-5 | | 5.6e=3.2 | | -9-x-7x=-41 | | 4-3p+7+4p= | | 5x^2-15x-35= | | 5h=6.5 | | (5x^2-4x-1)-(-4x^2-4)= | | -4-3x+4x=-1 | | 33x=-7 | | 2x^2+x+7=0 | | 33x=35 | | x+5x-4=18-2 | | 4x-6(.74)=-2 | | 5+2m-1=7m+11-4m | | 5/11=-3b/11+8b/22 | | 7(6y-2/4)-5y=24 | | -4-x+3x=-26 | | y=(x-4)(x+9) | | 10+2x=-12 | | 44=5-6 | | 7x-4y=84 | | (5x-4)=3x*2 | | 8x=4+2y | | 12(x-2)=1-x | | (a-4)(a-4)=0 | | 5x-4=(3x*2) | | (t-5)(t-5)=0 | | -2x+1+7x=36 | | logx+log(x-9)=1 | | 2n=-10 | | -20=04x | | -9=2x-3x-5 |

Equations solver categories