Multiply.
(3x + 5)(3x - 5)

The first one equals 20 and the second is 10 .Because 3 times 5 gives us 15 and plus 5 gives us 20 .And for the second one 5 times 3 gives us 15 ,mines 5 which gives us 10.

Pls mark me as the brainliest

8

Step-by-step explanation:

i don't see options to select from but my guess would be 8 because 7/8 is very close to being one and 8 1/10 is close to 8;  8 x 1 = 8