9r^2+9=0

Simple and best practice solution for 9r^2+9=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 9r^2+9=0 equation:


Simplifying
9r2 + 9 = 0

Reorder the terms:
9 + 9r2 = 0

Solving
9 + 9r2 = 0

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-9' to each side of the equation.
9 + -9 + 9r2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 9r2 = 0 + -9
9r2 = 0 + -9

Combine like terms: 0 + -9 = -9
9r2 = -9

Divide each side by '9'.
r2 = -1

Simplifying
r2 = -1

Reorder the terms:
1 + r2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + r2 = 0

The solution to this equation could not be determined.

See similar equations:

| -14x-13= | | 36(5-4)+2(8-4)+8= | | 5.6=-11.76 | | -2a+7=-7 | | 7x+10+3x=-90 | | 9x-4=x+20 | | 315=450-18g | | -8y+4=-9y+7 | | 40=7x+x+8 | | -6=n+6-7n | | 2/3+5/8 | | -3x+z=-7 | | (-8-6)+3-(-7)= | | 3/5-7/10 | | 2h-4+3h=6(h+2) | | 3/5+7/10 | | -2+x=33 | | 11=-3x+4x+2 | | 2x+(x+1)=14x | | 90+23+x=180 | | 3x(2x+1)=4x+1 | | 6x+8=14x | | 6-(x+4)=7(x-2) | | E=450-18(2) | | x/12=-3/4 | | x(x-1)=x+1 | | -2x=31-7 | | -3/8=x/40 | | 4x^2=9x+100 | | 2*2+3+3*2= | | 6k+6+2=20 | | 2/7+m=5/6 |

Equations solver categories