Almost finished just need a little help

[tkthustler]

I've worked the problem down to (1 + r/2)^2 = 1.022

I'm getting stuck on the divided by 2 and the exponent. I'm trying to solve for r. Any help would be great.

 

[Deleted member 4993]

I've worked the problem down to (1 + r/2)^2 = 1.022

I'm getting stuck on the divided by 2 and the exponent. I'm trying to solve for r. Any help would be great.

\(\displaystyle \left (1 + \frac{r}{2}\right )^2 = 1.022\)

Take square root of both sides.

Subtract 1 from both sides.

multiply by 2 - both sides.

 

[wjm11]

I've worked the problem down to (1 + r/2)^2 = 1.022

I'm getting stuck on the divided by 2 and the exponent. I'm trying to solve for r.

Remember, when you take the square root of both sides, you must put a "+ or -" in front of the square root of 1.022:

(1 + r/2) = +/- (1.022)^.5

This will result in having two solutions for r, which you should have been expecting already after seeing the exponent "2".

 

[Deleted member 4993]

Remember, when you take the square root of both sides, you must put a "+ or -" in front of the square root of 1.022:

(1 + r/2) = +/- (1.022)^.5

This will result in having two solutions for r, which you should have been expecting already after seeing the exponent "2".

Good catch Bill - I forgot to include that....