Multiply.
(v-4)(v+8)
Simplify your answer.

Question

Multiply. 
(v-4)(v+8)
  Simplify your answer.

anonymous · Answer

@sleepyhead314

sleepyhead314 · Answer

have you heard of a method called FOIL? :)

First
Outer
Inner
Last

anonymous · Answer

yes but I always mess it up :-/
would it be v^2-4v-8v+32?

sleepyhead314 · Answer

(v)*(v) + (v)*(8) + (-4)*(v) + (-4)(8)

very close, try again?

anonymous · Answer

v^2 +8v-4v-32?

sleepyhead314 · Answer

good!

now just add like terms for the middle two

anonymous · Answer

so v^2 + 4v-32?

sleepyhead314 · Answer

yup! :)

anonymous · Answer

awesome I have more if you don't mind? :)

sleepyhead314 · Answer

sure, just tag me again :)

academicgurusinc · Answer

Hi, So in order to do this problem, you need to multiply first terms with first terms and second terms with second terms. So, (v+4)(v-8) our first term is v. So "v" x "v" will get us v^2 then v x 8 gets us -8v We'll have v^2+8v. Then we have to do the same with the second terms. 4 x v gives us 4v and 4x8 gives us 32. So we'll get: v^2+4v-32 as our final answer. If you found this helpful, I encourage to subscribe to our youtube channel ( https://www.youtube.com/channel/UCYiI7SmkU4_vhdSzKBWsifg), to stay current with all of our new videos. Regards, Academic Gurus Inc. Twitter (@Academic_Gurus) Facebook (AcademicGurusInc) Youtube (Academic Gurus Inc)