Remark
Many calculators have a key that will do this in one step. Mine is one of them. So let's start with the answer and then we'll do it the long way.
9C3 = 84. You put it into your calculator as 9 2nF nCr 3 =
Solution

3*4*7 = 84 which is what you set out to show.
Answer:
-65
Step-by-step explanation:
use Khan academy it's very helpful
Wait if he worked 1 hour this question still makes no since
Answer:
<30,-20>
Step-by-step explanation:
4u + 2v
4< 6,-4> + 2< 3,-2>
<24,-16> + < 6,-4>
<30,-20>
Answer:
Step-by-step explanation:
hello :
x3^-8=0 means : x3^=8
but : 8 = 2^3
so : x3^= 2^3
x=2