Question

If $f\left(x\right)={\left(\frac{3}{5}\right)}^x+{\left(\frac{4}{5}\right)}^x-1,x\in R,$ then the equation $f\left(x\right)=0$ has :

• A. no solution
• B. one solution
• C. two solutions
• D. more than two solutions

Answer 1

Answer: (B)

Correct answer is (b) one solution