Three students were asked
to rewrite the expression
28×3 + 20×5 using a
common factor. The
rewritten expressions are
shown in the table.
Student A Student B
Student C
4x2(7×+ 5×3) 2x3(14 + 10x2)
10x3(3 + 2×2)
Part A: Did Student A
rewrite the expression
correctly using a common
factor? Explain. (3 points)
Part B: Did Student B
rewrite the expression
correctly using a common
factor? Explain. (3 points)
Part C: Did Student C
rewrite the expression
correctly using a common
factor? Explain. (3 points)
Part D: Rewrite the
expression using a different
common factor than what is
shown in the table. Choose
a common factor that
includes a coefficient other
than 1 and a variable. Show
every step of your work. (3
points)
