Can you prove from RHS = LHS especially in a HSC exam?

Question

Hi guys just wondering, if you don't know how to prove from LHS = RHS, can you go the other way around?

Especially when LHS is in a shortened expression and i can't seem to expand it to make it equal to RHS. But i can do RHS = LHS?

Will i be penalised in a HSC exam for maths?

Please answer. Thank you :)

Answer 1

Favorite Answer

why should one be penalized if you showing the two sides are equal ? Typically we start with the more complicated side and it usually is on left.

Source(s): my brain

Answer 2

Yes you can do that you will not be penalized. In exam only equality needs to be proved.

Answer 3

Can go either way.