Use the Perfect Square Trinomial and provide the first step to calculating 42^2 without a calculator.
(46 − 4)2

(46 + 4)2

(40 − 2)2

(40 + 2)2

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?