Multiply the two polynomials. Show or explain at least two steps of your process. (a-2) (2a^2-5a+8)

Factor the expression. Show or explain at least two steps of your process.

x^2-5x-24

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!