Solve for the roots of x in each of the equations below.

a. x4 - 81 = 0
b. x4 + 10x2 + 25 = 0
c. x4 - x2 - 6 = 0

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c =

Bobs burgers bam has a special deal of 4 hamburgers for $6. at that rate, how much should it cost to buy 3 hamburgers?