Algebra

Quantitative Aptitude (Pb Patwari)

Title

45:30

Video Progress

8 of 24 completed

Notes Progress

5 of 15 completed

MCQs Progress

38 of 100 completed

Subjective Progress

8 of 20 completed

Continue to Next Topic

Indian Economy - Understanding the basics of Indian economic system

Download Solution PDF

If 3^x – 3^x^–¹ = 18, then the value of x^xis:

3

8

27

216

Explanation:

From the given expression :
3^x − 3^x⁻¹ = 18
⇔ 3^x⁻¹ (3 − 1) = 18
⇔ 3^x −¹ = 9 = 3²
From the equation power :
⇔ x − 1 = 2 ⇔ x = 3.
∴ x^x = 3³ = 27

Profile ResourcesReport error