if X + X = 'y' and X x X = Z, And 'y' is the opposite of Z and when you add 'y' and Z they are double X. What is X.
yeah because X+X=y and X xX=z...if you added them together then it would be more than double x and the person above when they wrote z is negative well why is negative too because they both use X so it would be the same as it not being negative but I think there is a rule about multiplying negatives.
okay...multiplying negatives gives you a positive...you have X xX which is two neg's so Z is positive...the only way to get a neg is if it were X x why or some other number so sq7 is wrong...look at the problem again...you wrote it wrong.
A negative times a negative is a positive, but in math opposite is gunna mean its positive or negative, in other words the opposite of 2 would be -2. besides that I dont think this problem is solve-able
I'm not positive..check it again and see nif you wrote everything out...also it why not why. why is a letter in this case a number...why is a word.
2X = 'Y'
X2 = Z
-2X = X2
'y' + z = 2X = 2X + X2 = 2X
that doesnt make sense? are you sure that's the question?
just reading it hurt my head sry I don't know ://
sry all I know is Z is a negitive #