What does 3x+6y(12x-2y) equal?

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

Can someone pls ! pls answer all. no explanation needed..

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2