Question

5
7
7. If x + y =
2
(i) x - y
2
and xy = 3; find :
(ii) x2 - y2​

Answer 1

Answer:

given ,

x + y = 2 ----->eq1

and x - y = 2------>eq2

and xy = 3------->eq3then

X²-Y²=?

here by solving eq 1,2and3

we getx = 2 and y = 0

then ,

X²-Y²= (2)² - (0)² => X²-Y²= 4 - 0

=>X²-Y²= 4

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