The first step in attempting to factor the expression x2−7x+10 is to write out all of the factor pairs. Which of the following is the complete list of factor pairs for the constant term in this expression? 1 and 10, 2 and 5, −1 and −10, −2 and −5

1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5

−1 and 7, 1 and −7

1 and 10, 2 and 5