What multiplies to -42 and adds to 1

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

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Answer asap! urgent! will give brainliest!