Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If (x - 4) (x2 + 4x + 16) = x3 - P

Find the value of \(\sqrt {P}\)

Options:

7

13

8

2

Correct Answer:

8

Explanation:

(a - b) (a2 + b2 + ab) = a3 - b3 

    ↓            ↓

(x - 4) (x2 + 4x + 16) = x3 - (4)3 

P = 64

So, \(\sqrt {P}\) = 8