Question

Choose the correct product of (7x - 3)(7x + 3).

a. 49x^2 + 9
b. 49x^2 - 42x + 9
c. 49x^2 - 9
d. 49x^2 + 42x + 9

Answer 1

1 think it a

Answer 2

use:
\[(a-b)(a+b) = a^2 - b^2\]

Answer 3

Nope, it is not \(a\)..

Answer 4

eta beat me to it gg

Answer 5

Use pen..

Answer 6

And paper too, otherwise use your laptop screen and write on it. :P

Answer 7

It is not a, a is prime.

Answer 8

c. ?

Answer 9

Good.. :)

Answer 10

Yeah.

Answer 11

okay, thanks!

Answer 12

\(\dagger\)