Question 1

Solve \({125^x}=25\)

\(x = \dfrac{2}{3}\)

Question 2

Solve \({5^{4x - 7}}=1\)

\(x = 1.75\)

Question 3

Solve \({8^x}=\dfrac{1}{4}\)

\(x = - \dfrac{2}{3}\)

Question 4

Solve \({9^{2x + 1}}=3 \times {27^{x - 2}}\)

\(x = -7\)

Question 5

Solve \({4^{x + 2}} \times {8^{1 - x}} =2 \)

\(x = 6\)

Question 6

Solve the following exponential equation: \({3^k}\; = \;3\sqrt 3 \)

\(k = \frac{3}{2}\)

Question 7

Solve the following exponential equation: \({2^{x + 3}}\; = \;32\)

\(x = 2\)

Question 8

Solve the following exponential equation: \({4^{x + 1}}\; = \;16\sqrt 2 \)

\(x = \dfrac{5}{4}\)

Question 9

Solve the following exponential equation: \({9^{3 - k}}\; = \;9\sqrt 9 \)

\(k = \dfrac{3}{2}\)

Question 10

Solve the following exponential equation: \({8^{x - 1}}\; = \;\dfrac{1}{{16\sqrt 2 }}\)

\(x = - \dfrac{1}{2}\)

Question 11

Solve \(5^{x+2}=25\)

\(x=0\)

Question 12

Solve \(4^{2x+1}=\dfrac{1}{2}\)

\(x=-0.75\)

Question 13

Solve \(\left ( \dfrac{1}{2}\right )^{x-1}=8\)

\(x=-2\)

Question 14

Solve \(27^{x-3}=81\)

\(\dfrac{13}{3}\)