Answer:
4 : 12
4/ 12
4 to 12
Step-by-step explanation:
30 + 2 = 32
(a-b) X (a+b)
= aXa - bXa +aXb -bXb (distributing)
Now, cross product of a vector with itself = 0
so, aXa = 0, bXb = 0
Also, aXb = - bXa
so,
(a-b) X (a+b) = 0 + aXb + aXb + 0
= 2aXb
hence, proved :)
Answer: A. 35+1
B. 20+ 5z
C. 4 + 12
Step-by-step explanation:
This is just using the distributive property which is like foiling
10^4 = 10,000
9 x 10,000 = 90,000