Factor completely 3x3 – 21x2 – 27x

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

If you could answer these your a life saver