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- If 9^x – 9^x – 1 = 648, then find the value of x^x
Question 1:
If 9^x – 9^x – 1 = 648, thenfind the value of x^x
A. 4
B. 9
C. 27
D. 64
Feedback Select the given options and substitute the value of x = 5, 6, 1.5 and 3 in the given expression.
Substituting value of x = 3,9^x – 9^x – 1 = ?
9^3 – 9^3 – 1 = 648
Value of x = 3
x^x = 3^3 = 27
Substituting value of x = 3,9^x – 9^x – 1 = ?
9^3 – 9^3 – 1 = 648
Value of x = 3
x^x = 3^3 = 27
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