9x^2-36x-2=0

Simple and best practice solution for 9x^2-36x-2=0 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 9x^2-36x-2=0 equation:


Simplifying
9x2 + -36x + -2 = 0

Reorder the terms:
-2 + -36x + 9x2 = 0

Solving
-2 + -36x + 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'.
-0.2222222222 + -4x + x2 = 0

Move the constant term to the right:

Add '0.2222222222' to each side of the equation.
-0.2222222222 + -4x + 0.2222222222 + x2 = 0 + 0.2222222222

Reorder the terms:
-0.2222222222 + 0.2222222222 + -4x + x2 = 0 + 0.2222222222

Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000
0.0000000000 + -4x + x2 = 0 + 0.2222222222
-4x + x2 = 0 + 0.2222222222

Combine like terms: 0 + 0.2222222222 = 0.2222222222
-4x + x2 = 0.2222222222

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 0.2222222222 + 4

Reorder the terms:
4 + -4x + x2 = 0.2222222222 + 4

Combine like terms: 0.2222222222 + 4 = 4.2222222222
4 + -4x + x2 = 4.2222222222

Factor a perfect square on the left side:
(x + -2)(x + -2) = 4.2222222222

Calculate the square root of the right side: 2.054804668

Break this problem into two subproblems by setting 
(x + -2) equal to 2.054804668 and -2.054804668.

Subproblem 1

x + -2 = 2.054804668 Simplifying x + -2 = 2.054804668 Reorder the terms: -2 + x = 2.054804668 Solving -2 + x = 2.054804668 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 2.054804668 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.054804668 + 2 x = 2.054804668 + 2 Combine like terms: 2.054804668 + 2 = 4.054804668 x = 4.054804668 Simplifying x = 4.054804668

Subproblem 2

x + -2 = -2.054804668 Simplifying x + -2 = -2.054804668 Reorder the terms: -2 + x = -2.054804668 Solving -2 + x = -2.054804668 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -2.054804668 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.054804668 + 2 x = -2.054804668 + 2 Combine like terms: -2.054804668 + 2 = -0.054804668 x = -0.054804668 Simplifying x = -0.054804668

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.054804668, -0.054804668}

See similar equations:

| y=5/2(2)-1 | | 7-(4-4x)= | | (x+40)(2x+38)=0 | | 6(2x-2)+2=12x-10 | | 6(2x-2)+2=5x-3 | | -2*3+3=y | | 2(x+3)+5=11 | | 18^2/18^6= | | -8=8v-4(v+8) | | 40=5/4w | | -24=-4/7w | | -5(1-5n)= | | m/(m-5)-6=5/(m-5) | | -3x^3+x^2-3= | | 8x+3=10x-5 | | 4y-16x=3 | | (-8R)(-9R)= | | 198=66-x | | log(7)y=2 | | 4x1/9 | | mx=20x-x^2 | | (25x^-3*Y^2)/(35x^5*Y^4)=1 | | a+6=-11 | | (25x^-3*Y^2)/(35x^5*Y^4) | | 8x=6x+2 | | 11/4x=6 | | 81x^2-1490x+7100=0 | | .25x+x=1.25x | | 2ax^2+10ax-12a= | | (6x-5)/4=3x | | m/m-5-6=5/m-5 | | X=8.8 |

Equations solver categories