Math, asked by kapilchavan16, 6 months ago

If x + y = 10 and x2 + y2 = 68, then find xy

Answers

Answered by rospark35

6

Answer:

16

Step-by-step explanation:

a²+b²=(a+b)²-2ab

68=10²+2ab

2ab=32

ab=16

hope this helps

Answered by srinivasbeldhari

2

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

68. =10^2+2xy

68 =100+2xy

2xy. = 100-68

2xy=. 32

xy= 32÷2

= 16

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