Use polynomial identities to prove that 63^2 = (60 + 3)^2 Please show and explain all work, thank you for your help.

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq less than 132. the probability that a randomly selected adult has an iq less than 132 is?

Miguel has 334 baseball cards and 278 football cards. he says, i have 612 cards in all. is that reasonable? explain using the words round and estimate.

What is the name of the thick, lower end of the digestive tract where solid waste is gathered and leaves the body?