9x^2-54x+79=0

Simple and best practice solution for 9x^2-54x+79=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^2-54x+79=0 equation:


Simplifying
9x2 + -54x + 79 = 0

Reorder the terms:
79 + -54x + 9x2 = 0

Solving
79 + -54x + 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'.
8.777777778 + -6x + x2 = 0

Move the constant term to the right:

Add '-8.777777778' to each side of the equation.
8.777777778 + -6x + -8.777777778 + x2 = 0 + -8.777777778

Reorder the terms:
8.777777778 + -8.777777778 + -6x + x2 = 0 + -8.777777778

Combine like terms: 8.777777778 + -8.777777778 = 0.000000000
0.000000000 + -6x + x2 = 0 + -8.777777778
-6x + x2 = 0 + -8.777777778

Combine like terms: 0 + -8.777777778 = -8.777777778
-6x + x2 = -8.777777778

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -8.777777778 + 9

Reorder the terms:
9 + -6x + x2 = -8.777777778 + 9

Combine like terms: -8.777777778 + 9 = 0.222222222
9 + -6x + x2 = 0.222222222

Factor a perfect square on the left side:
(x + -3)(x + -3) = 0.222222222

Calculate the square root of the right side: 0.471404521

Break this problem into two subproblems by setting 
(x + -3) equal to 0.471404521 and -0.471404521.

Subproblem 1

x + -3 = 0.471404521 Simplifying x + -3 = 0.471404521 Reorder the terms: -3 + x = 0.471404521 Solving -3 + x = 0.471404521 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0.471404521 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0.471404521 + 3 x = 0.471404521 + 3 Combine like terms: 0.471404521 + 3 = 3.471404521 x = 3.471404521 Simplifying x = 3.471404521

Subproblem 2

x + -3 = -0.471404521 Simplifying x + -3 = -0.471404521 Reorder the terms: -3 + x = -0.471404521 Solving -3 + x = -0.471404521 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -0.471404521 + 3 Combine like terms: -3 + 3 = 0 0 + x = -0.471404521 + 3 x = -0.471404521 + 3 Combine like terms: -0.471404521 + 3 = 2.528595479 x = 2.528595479 Simplifying x = 2.528595479

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.471404521, 2.528595479}

See similar equations:

| 3x+2/3=11/2 | | -126/(-6) | | 1-2(m-5)=3+6(m+4) | | .1x-2.6=.4(x-5) | | -2/5x=3/2 | | x^2/2+3/2x=3 | | x^2-.82x+.046=0 | | -3(-2)(-3)(5)= | | X-1/2=5/8 | | -4x-14=7x+8 | | -16t^2+32t+72=0 | | y=4x^8-x^2+5 | | 49(x+1/7)+49*-1=49(3x+2/7) | | 2r+6=9r-1 | | 4=3/2+b | | 3d-8=7d+2 | | 11x/2(2-5)=3 | | 5x-4y=98 | | 3u+12=12+3u | | 12/5x=60 | | x^2-.38x+.046=0 | | -11-(-1)= | | e^6x+7=0.42 | | (x^2/2)-x=12 | | 2x+5=5(x-2) | | 3=r/4 | | 4x^2+3x-13=0 | | -1.8+0.8+(-0.9)+0.7= | | 5x^2-9x-45=0 | | 2b^2+2b-112=0 | | 4(8-y)=2x+16 | | 1/4(5x+7)=3(2-2x)+3 |

Equations solver categories