Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If x - y = 4 and xy = 45, then the value of x3 - y3 is :

Options:

82

604

151

822

Correct Answer:

604

Explanation:

If x - y = 4

xy = 45

Then the value of x3 - y3

Put x = 9 and y = 5

x3 - y3 = 93 - 53 

x3 - y3 = 729 - 125 = 604