Determine the realrootsof$=8+4491+8526($a$)$ Graphically. Please provide the commands you used as well as your outputs $($i$.$e$.$ graph andthe root$).($b$)$ Iterativelybyemployingtheinitialguessesofxl$=0\mathrm{.}5$andxu$=1\mathrm{.}0.$Pleaseprovidethecommandsyou used as well as your output root.Determine the real root of $=0\mathrm{.}80\mathrm{.}3/($a$)$ Graphically. Please provide the commands you used as well as your outputs $($i$.$e$.$ graph andthe root$).($b$)$ Iteratively.Pleaseprovidethecommandsyouusedaswellasyouroutputroot. Solve the problem with mathlab and indicate your steps