write R code for those questions thanks

Please create a code chunk and use the option `#| label: photo` to run the code in the code chunk named `photo`. Note that the chunk options are not carried.

Solve the equation of $4x^2-17x+8=0$ using the [quadratic formula](https://en.wikipedia.org/wiki/Quadratic_formula).

Compute $\sqrt{e^{\log_{10}(\sin(3\pi/2)/(-8))}}$, where $e = 2.71828...$ is the Euler's number.