4r^2+9=0

Simple and best practice solution for 4r^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 4r^2+9=0 equation:


Simplifying
4r2 + 9 = 0

Reorder the terms:
9 + 4r2 = 0

Solving
9 + 4r2 = 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 + 4r2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 4r2 = 0 + -9
4r2 = 0 + -9

Combine like terms: 0 + -9 = -9
4r2 = -9

Divide each side by '4'.
r2 = -2.25

Simplifying
r2 = -2.25

Reorder the terms:
2.25 + r2 = -2.25 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
2.25 + r2 = 0.00

The solution to this equation could not be determined.

See similar equations:

| 8m+5=4m-15 | | log[9](7)-log[9](10)=log[9]x | | x^2+-6x+8y+17=0 | | y=14.95+.50(50) | | 9-4(2c-1)= | | 3(-4b)-2(a-b-c)= | | 5q-4=2q+2 | | k=4-k | | -m(2m+2n)+3mn+2m^2= | | 20x+0.50=100x+0.25 | | 8n-2(n^2+n)+12= | | 20x+0.25=100 | | Cos(2t)=sin(t) | | 6x7/5 | | (2y-3)(2y-3)(2y-3)= | | 2.5x+3.75=5x | | =-3.8-1.2 | | 3(-2-2)-1=2-5(-2+5) | | =3.8-1.2 | | f(x)=(x)2+6x+9 | | -3x+15=4.5 | | =(4x+18y)-(-22x+6y) | | 14x+18=275-222 | | x^3+4x-166=0 | | =(3x+16y)-(-23x+5y) | | 4(2+0y)-3y=24 | | 6-23u+20u*2= | | ((x^2-9)/5)-((x^2-4)/15)=(1-2x)/3 | | logx=.4 | | h=16t^2+160t+10 | | (x^2-9/5)-(x^2-4/15)=1-2x/3 | | r-17-1=-4.8 |

Equations solver categories