aaronasaad2016 aaronasaad2016

20-02-2020
Mathematics

contestada

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

Respuesta :

ujalakhan18 ujalakhan18

20-02-2020

Answer:

C

Step-by-step explanation:

According to formula

(a+b)(a-b)=a²-b²

So

(y+9)(y-9)

=y²-(9)²

=y²-81

Answer Link

dower081402 dower081402

20-02-2020

Answer:

Answer is y^2-81

Step-by-step explanation:

Answer Link

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