If x3 + y3 = 8 x + y = 2 Find the valu - CUETMOCK

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If x³ + y³ = 8

x + y = 2

Find the value of xy.

Options:

6

7

0

2

Correct Answer:

0

Explanation:

x³ + y³ = 8

x + y = 2

(x + y)³ = x³ + y³ + 3xy (x + y)

(2)³ = 8 + 3xy (2)

8 - 8 = 6xy

0 = 6xy

xy = 0

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