Question

(v-8)^2 help pl0x

Answer 1

Do you want to expand the expression?

Answer 2

\[(v-8)^2 \implies (v-8)(v-8)\]

Answer 3

Use the foil method.

Answer 4

I'll give you a hint:
\[(a-b)^2 = a^2 -2ab +b^2 \]

Answer 5

http://prntscr.com/7kj71y this is the whole thing...

Answer 6

Ah, its \[(3v-8)^2\]

Answer 7

Just rewrite it as \[(3v-8)^2 = (3v-8)(3v-8) = \]

Answer 8

Do you know how to use the foil method to expand?

Answer 9

No idea

Answer 10

You expand each term one by one.

Answer 11

\[(3v - 8)(3v - 8) = 3v*3v - 8*3v - 8*3v + 8*8\]

Answer 12

To approach binomial expansion of any order, you must first understand how the foil method works.

Answer 13

so its B?

Answer 14

But what about the v term?

Answer 15

After you combine the like terms, you should get something like\[9v^2-48v+64\]

Answer 16

The only time when the middle term cancels out is when the signs are opposite. Check out conjugate multiplication for more information.