Question

If x-y=9 and xy=16 find the value of x^2+y^2. Someone please help me immediately.​

Answer 1

Answer:

Here is your answer...

Step-by-step explanation:

x - y =9

squaring both sides

{(x - y)}^2 = {x}^2 + {y}^2 - 2xy

81 =x^2 +y^2 -2×16

x^2+y^2=81+32 = 113

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