The following dot plot shows the number of books each student checked out from the library last month. Each dot represents a dif
ferent student. Which of the following is a typical number of books one student checked out?
2 answers:
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Answer:
x = -1, x = 1
Step-by-step explanation:
Factor the equation. (It's a difference of squares, so we know the form will be (a-b)(a+b).)
Test this by FOILing it out, if you're unsure. This is something it can be good to memorize!
Set it equal to 0.
Separate the two parenthetical expressions by the Zero Product Property.
Solve for x!