Mathematics, 05.08.2020 15:01 dragon2565
If x and y are two positive real numbers such that x 2 +4y 2 =17 and xy =2, then find the value of x- 2y. a. 3 b. 4 c. 8 d. 9
Answers: 3
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and 
.![(x-2y)^2=x^2-2(x)(2y)+(2y)^2\ \ \ [(a+b)^2=(a^2-2ab+b^2)]](/tpl/images/0717/6917/5e942.png)
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If x and y are two positive real numbers such that x 2 +4y 2 =17 and xy =2, then find the value of x...
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