If the expression x2y2+tx+y24x2y2+tx+y24 is a perfect square, then the – McqOptions

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1.	If the expression x2y2+tx+y24x2y2+tx+y24 is a perfect square, then the value of t is?
A.	±1
B.	±2
C.	0
D.	±3
Answer» B. ±2

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