Question

5. Find the value of x2 + y2 if (x + y) = 11 and xy = 9​

Answer 1

Answer:

Value of x^2+y^2 is 103.

Step-by-step explanation:

(x+y) = 11

Squaring both sides,

(x+y) ^2= (11)^2

or, x^+y^2+2xy= 121

or, x^2+y^2+2*9=121

or, x^2+y^2+18=121

or, x^2+y^2=121-18

therefore, x^2 +y^2= 103

Answer 2

Answer:

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