Answer:
the answer is C. No, it fails the vertical line test.
B
Step-by-step explanation:
Noting the following rule of radicals
× =
Given
( + )( - )
Each term in the second factor is multiplied by each term in the first factor
= ( - ) + ( - ) ← distribute parenthesis
= - + -
25 pens is better because if you see the cost of one it will be cheaper