Question

x = a + 1a and y = a - 1a find the value of x2 - y2

Answer 1

Answer:

X= a+1a= 2a

y= a-1a = 0

x^2- y^2

(x+y)(x-y )

(2a+0)(2a-0 )

(2a)(2a)

4a^2

Answer 2

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