9r^2+9r+5=

Simple and best practice solution for 9r^2+9r+5= 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 9r^2+9r+5= equation:


Simplifying
9r2 + 9r + 5 = 0

Reorder the terms:
5 + 9r + 9r2 = 0

Solving
5 + 9r + 9r2 = 0

Solving for variable 'r'.

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

Divide each side by '9'.
0.5555555556 + r + r2 = 0

Move the constant term to the right:

Add '-0.5555555556' to each side of the equation.
0.5555555556 + r + -0.5555555556 + r2 = 0 + -0.5555555556

Reorder the terms:
0.5555555556 + -0.5555555556 + r + r2 = 0 + -0.5555555556

Combine like terms: 0.5555555556 + -0.5555555556 = 0.0000000000
0.0000000000 + r + r2 = 0 + -0.5555555556
r + r2 = 0 + -0.5555555556

Combine like terms: 0 + -0.5555555556 = -0.5555555556
r + r2 = -0.5555555556

The r term is r.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + r2 = -0.5555555556 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + r2 = -0.5555555556 + 0.25

Combine like terms: -0.5555555556 + 0.25 = -0.3055555556
1.25 + r2 = -0.3055555556

Factor a perfect square on the left side:
(r + 0.5)(r + 0.5) = -0.3055555556

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3(6-5k)=-k-24 | | x^2-6x-4=-8 | | 9n-10-7n=-9+2n-1 | | 14b+5-8b=-1 | | -16n=-128 | | -y/2+14=-1 | | 3(3x+3)=9x-1 | | 3x+(x+10)=633 | | F(8)=4x-5 | | k-21=15 | | 6(4+3x)=42 | | -.25(12n)-(4n+5)=16+3n | | X=4x-5 | | (x^2-2x+1)+(2x^4+5x-4)+(-3x^4+x^2+5)=0 | | -10y=5 | | 15-6q+8=19 | | n-21=-3 | | 6(4x+7)=186 | | 180-4x=180 | | y=-2/3(-3)+1 | | -2.6+0.7p=0.9p+5.3 | | 2(t-4)=3-(3t+1) | | 5+2x+1=22 | | 6b=54 | | 2x^2+40=4x^2 | | 8x+32x-6=8(5x+6) | | 8(-6+n)=-24+2n | | -35=-5(r+2) | | 8-4x=2x-64 | | 36-10=9m-13-7m | | 2x^2+40=4x | | 3y+10=180 |

Equations solver categories