[aNg3LiSt]

If [(r^2)/4] [(3x)^r] {[2/(9x^2)]^6-r} can be simplified to [k/(x^3)], find the values of the constants r and k.

I know this question might be been posted b4 but i lost the thread. Anyone can help with the solutions or post a link? Thanks a lot.

[aNg3LiSt]

sigh, no1 knows?

[wohaha]

do you wanna scan in the question... Your power and divide and bracket like a little out.....

[aNg3LiSt]

Er... I've checked it's correct. I've gotten this question on A math txtbook Panpac publisher de. Ex 2.3 Qn 7

[wohaha]

[(r^2)/4] [(3x)^r] {[2/(9x^2)]^6-r}

or

[(r^2)/4] [(3x)^r] {[2/(9x^2)]^(6-r)}