Question

13. Which of the equalities is also an identity ?
Equality X: x^2 + 6a + 7 = 16
Equality Y: x^2 + 2xy + y^2=(x + y)^2
Equality Z: x^2 - y^2 = (x + y)(x - y)* 1
(1 Point)
Only Equality Y
Only Equality z
Both Equality Y & Z
Equalities X, Y & Z​

Answer 1

Answer:

Both equality y and z

Step-by-step explanation:

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