You can use the cosine rule for this - you might have to change some of the letters around for it to make sense though. Hope this helps!
Please help
1 answer:
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To simplify this expression, we are going to combine like terms.
First, we can see that we have two terms with the variables being multiplied together,
and
. Together, these add to
, so our expression is now:
We also have two terms with ,
and
. Together, these add to
, so our expression is now:
Our final expression is xy - yz + 5.
