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3 votes
Simplify (y + 9)(y - 9).
А у2
B у2 - 18
C y2 - 81
D у2 + 81

User Nohat
by
8.2k points

2 Answers

3 votes

Answer:

Answer is y^2-81

Explanation:

User Anergy
by
7.4k points
3 votes

Answer:

C

Explanation:

According to formula

(a+b)(a-b)=a²-b²

So

(y+9)(y-9)

=y²-(9)²

=y²-81

User WeakLearner
by
7.5k points