Question

I need help I can’t figure it out

Answer 1

`\large\boxed{(41p)/(70q^4(r-9)^2)}`

Explanation:

`(2p^4)/(5q^5(r-9)^3)\cdot(41q(r-9))/(28p^3)\\\\=(2\!\!\!\!\diagup^1\cdot41)/(5\cdot28\!\!\!\!\!\diagup_(14))\cdot(q\!\!\!\!\diagup)/(q^(5\!\!\!\!\diagup^4))\cdot\frac{(r\!\!\!\!\!\!{--}-9)\!\!\!\!\!\!{--}}{(r-9)^(3\!\!\!\!\diagup^2)}\cdot(p^(4\!\!\!\!\diagup))/(p^3\!\!\!\!\!\!\diagup)\\\\=(41)/(70)\cdot(1)/(q^4)\cdot(1)/((r-9)^2)\cdot(p)/(1)\\\\=(41p)/(70q^4(r-9)^2)`