Enter the appropriate word or phrase in each blank. (Use^ to denote an exponent. Do not enter spaces in your answer. Enter thesimplified expressions in parts b and d.)a. The expression (a + b)² is called theWrite your response here... of a binomial.b. When simplified, (a + b)² is equivalent to the expressionc. This resulting trinomial is called a d. For example, (x+4)²-