If x3 + y3 = 1339 x + y = 13 Find the - CUETMOCK

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Home Questions SG5TADW653

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If x³ + y³ = 1339

x + y = 13

Find the value of xy.

Options:

11

22

33

44

Correct Answer:

22

Explanation:

x³ + y³ = 1339

x + y = 13

(x + y)³ = x³ + y³ + 3xy (x + y)

2197 = 1339 + 39xy

xy = \(\frac{858}{39}\)

xy = 22

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