whenever I try to calculate a formula that involves bracket or a ^-# it give me a syntex error. I'm using a TI-84plus. Ex: [1-(1+.15)^5]

CHALLENGING PROBLEMS 30-34 Your company is planning to borrow $1 million on a 5-year, 15%, annual payment, fully am- ortized term loan. What fraction of the payment made at the end of the second year will represent repayment of principal? lan to make a total of 5 deposits of $100 each, one every hank pays a nominal inter- FE