1 or 0
1 or 2
1 or -2
-1 or 2
Correct answer is B
32x−3x+2=3x+1−27
= (3x)2−(3x).(32)=(3x).(31)−27
Let 3x be B; we have
= B2−9B−3B+27=B2−12B+27=0.
Solving the equation, we have B = 3 or 9.
3x=3 or 3x=9
3x=31 or 3x=32
Equating, we have x = 1 or 2.
In which of the following series can be the formula S = a1−r where a is the firs...
If 8Px8Cx=6, find the value of x....
Calculate the variance of √2, (1 + √2) and (2 + √2) ...
If \(\begin{pmatrix} 3 & 2 \\ 7 & x \end{pmatrix} \begin{pmatrix} 2 \\ 3 \end{pmatrix} = \be...
Given \sin \theta = \frac{\sqrt{3}}{2}, 0° \leq \theta \leq 90°, find \(\tan 2\the...
If g(x) = √(1-x^2), find the domain of g(x)...
The radius of a sphere is increasing at a rate 3cm s^{-1}. Find the rate of increase in the surf...
If (x - 5) is a factor of x^3 - 4x^2 - 11x + 30, find the remaining factors....
The coefficient of the 5th term in the binomial expansion of (1 + kx)^{8}, in ascending powers o...
Given that P = {x : 2 ≤ x ≤ 8} and Q = {x : 4 < x ≤ 12} are subsets of the universal set...