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Dennis_Churaev [7]
3 years ago
10

Sabendo que x2 + y2=74 e que xy=35, calcule valor de (x - y2)2

Mathematics
1 answer:
Ann [662]3 years ago
6 0
To solve this problem you must apply the proccedure shown below:

 1. You have the following information given in the problem above:

 - x²+y²<span>=74
 xy=35

 2. Therefore, you have that (x-y)</span>² is:

 =(x-y)²
 =x²-2xy+y²
 =(x²+y²)-2xy

 3. When you substitute the values given in the problem, you obtain:

 =74-2(35)
 =74-70
 =4

 4. Therefore, as you can see, the correct answer is: 4

 
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