,rand +(-3z find thevalue of: (a)r+y(c)yofr-26 and y 3, find the value – InterviewSolution

1.	,rand +(-3z find thevalue of: (a)r+y(c)yofr-26 and y 3, find the value of : (a)x+y (b)x-y(e(b) x-y
Answer» given thatx^2 +y^2 =26....... (1)and xy=3......(2)squaring eq.1(x^2 +y^2)^2 =x^4 +y^4 +2x^2 y^2=26^2x^4 +y^4+2 (xy)^2 =676x^4 +y^4 +2 (3)^2=676x^4 +y^4+18=676x^4 +y^4=676-18x^4 +y^4=658

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