find arithmetic mean of ײ+3×y and y²-3×y
Answers
Answered by
2
Answer:
Arithmetic mean= a+b/2
= x^2+3xy+ y^2 - 3xy/2
= x^2+y^2/2
Answered by
0
Answer:
=x^2+y^2
Step-by-step explanation:
=x^2+3xy+y^2-3xy
=x^2+y^2
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