9x^2-4x+121=

Simple and best practice solution for 9x^2-4x+121= 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^2-4x+121= equation:


Simplifying
9x2 + -4x + 121 = 0

Reorder the terms:
121 + -4x + 9x2 = 0

Solving
121 + -4x + 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'.
13.44444444 + -0.4444444444x + x2 = 0

Move the constant term to the right:

Add '-13.44444444' to each side of the equation.
13.44444444 + -0.4444444444x + -13.44444444 + x2 = 0 + -13.44444444

Reorder the terms:
13.44444444 + -13.44444444 + -0.4444444444x + x2 = 0 + -13.44444444

Combine like terms: 13.44444444 + -13.44444444 = 0.00000000
0.00000000 + -0.4444444444x + x2 = 0 + -13.44444444
-0.4444444444x + x2 = 0 + -13.44444444

Combine like terms: 0 + -13.44444444 = -13.44444444
-0.4444444444x + x2 = -13.44444444

The x term is -0.4444444444x.  Take half its coefficient (-0.2222222222).
Square it (0.04938271604) and add it to both sides.

Add '0.04938271604' to each side of the equation.
-0.4444444444x + 0.04938271604 + x2 = -13.44444444 + 0.04938271604

Reorder the terms:
0.04938271604 + -0.4444444444x + x2 = -13.44444444 + 0.04938271604

Combine like terms: -13.44444444 + 0.04938271604 = -13.39506172396
0.04938271604 + -0.4444444444x + x2 = -13.39506172396

Factor a perfect square on the left side:
(x + -0.2222222222)(x + -0.2222222222) = -13.39506172396

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 15-4a=a-5 | | (6z+75)-(2z-2)=78 | | 5-13= | | 2(b-3)+4(2b+2)= | | (9x-3)/7=x-1 | | -3+18=33 | | 1/5(22^3)(42^1)-2/2*2/5 | | 5(m+3)+9m=11 | | 15+5=0 | | 12•5/15-3=y | | 9x-3/7=x-1 | | 16+3x=124 | | 15+6m^2+23m=0 | | 2b=-5(b-6) | | 6x-5x=1 | | x-5(x-1)=-8x-15 | | 2(w-7)-4=-6(-4w+1)-8w | | X-12+4=27 | | 5(t-3)-8t=-72 | | 14+3n=8n-3n(n-4) | | 8/a-3/a | | 4x-7x+2=-(3x-3)-1 | | 2(2n+4)=-6(n+7) | | 3-24x+36=9+6x | | 36+74-53+r= | | 2x+17=124 | | 21.00+0.75x-0.75x=1.75x-0.75x | | 22=2y-12 | | 15y+13=61 | | 2e^7x=674 | | x=2240x-16x^2 | | 3(y-10)+1=5.5(y-8) |

Equations solver categories