Question

x=(\sqrt(5)+\sqrt(2))/(\sqrt(5)-\sqrt(2)) y=(\sqrt(5)-\sqrt(2))/(\sqrt(5)+\sqrt(2)) find value of 9x^(2)+2xy+y^(2)

Answer 1

Answer:

9-(x²-2xy+y²)

9-(x²-2xy+y²)9-(x-y)²

9-(x²-2xy+y²)9-(x-y)²3²-(x-y)²

9-(x²-2xy+y²)9-(x-y)²3²-(x-y)²this is in the form a²-b²

9-(x²-2xy+y²)9-(x-y)²3²-(x-y)²this is in the form a²-b²so the factors are (3+x-y) (3-x+y)

Answer 2

Step-by-step explanation:

11.Solve the following:(Hint: rationalise denominator of x and y seperately) *

3 points

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