Step by step explanation on how to solve (-3 + 8 x 2 -3)

The value √10 and √15 are plotted on the number line

Select the quadratic that has root x = 8 and x = -5

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap