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keidyhernandezm
21.07.2019 •
Mathematics
Sabendo que x2 + y2=74 e que xy=35, calcule valor de (x - y2)2
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Ответ:
1. You have the following information given in the problem above:
- x²+y²=74
xy=35
2. Therefore, you have that (x-y)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
Ответ:
-2/3
Step-by-step explanation: