x, y are two positive numbers such that

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

x, y are two positive numbers such that x > y. If $x^4 + y^4 = 706$ and xy = 15, then the value of 2x + 3y is :

Options:

Correct Answer:

Explanation:

If $x^4 + y^4 = 706$

xy = 15

then the value of 2x + 3y is= ?

We can break 15 in 3 and 5

So Put the value of one as 5 and another as 3

2x + 3y = 2(5) + 3(3) = 10 + 9 = 19