<p>Did anyone take this test?</p>
<p>I took it today:
English - easy
Math - hard
Reading - average
Science - average/hard</p>
<p>Yep, took it today.
English- really easy
Math -average/a little difficult
Reading - pretty easy
Science - easy/average</p>
<p>Would anyone like to discuss?</p>
<p>sure. what was the second to last math answer? the question was x^2+y^2=20 xy=2 what is (x-y)^2?</p>
<p>I think 16 because (x-y)^2 = (x-y)(x-y) = x^2-2xy+y^2 and x^2+y^2=20 and xy=2 so 20-2(2)=20-4=16</p>
<p>thank god, i didnt have time to figure it through but i put that down. how about the last one, was it law of cosines?</p>
<p>I didn't have time for the last one but I guessed C. Do you remember what the answer choice was?</p>