Richard simplified an expression in three steps, as shown:

Which is the first incorrect step and why?

Step 1, all the exponents are multiplied by 3

Step 2, the exponents in the denominator are multiplied

Step 3, the exponents of the same base are subtracted during division

Step 3, the exponents of the same base are added during division

Question

Richard simplified an expression in three steps, as shown: 



Which is the first incorrect step and why? 
  
Step 1, all the exponents are multiplied by 3 
 
Step 2, the exponents in the denominator are multiplied 
 
Step 3, the exponents of the same base are subtracted during division 
 
Step 3, the exponents of the same base are added during division

starfruityum · Answer

attachment

starfruityum · Answer

Please help!

starfruityum · Answer

Please i need to pass this! Someone please!

alones · Answer

Alright so the mistake he has, is where he multiplies the common variables, he needs to add it instead of multiplying, so it's between steps one and two.

starfruityum · Answer

So B? @AloneS

alones · Answer

I believe that's right, so step $2$

starfruityum · Answer

ok. Ill tell you if ur right when im done. Thanks :D

alones · Answer

Haha sounds good c:'

starfruityum · Answer

Can you help with another one @AloneS

alones · Answer

Hrmm depends...make a new post.

starfruityum · Answer

ok.