If P=x²-yz , Q=y²-x² ,R=z²-xy, Then find PQR

I don't know if it was necessary to open the brackets, but I think you can write it like this:

step-by-step explanation:

sry but any answer choices

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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