Which gate it is
That circle with a plus sign i.e ⊕, is known as Exclusive OR gate. It is an OPERATION of OR gate.
Value for this Gate
Its value is true, if either one is true and the second is false. If both of the inputs are true of both are false, its false.
Truth Table for this gate
X | Y | Result
0 0 0
1 0 1
0 1 1
1 1 0
This is the truth table for it.
Your Equation
(x+y)⊕y
First solve out the paranthesis part. Then use the result as x
and you have the y
on the right side of the operator. Now, check in the table for the value :) You'll get the answer. If both are true, the answer would be false, it either one is false and other is true then the result would be true. From the Truth Table of the GATE.
Reference
For more on that refer the link