Question 33
IndicesIf it is given that 5x + 1 + 5x = 150 then the value of x is equal to
- A.3
- B.4
- C.1
- D.2
- E.½.
Show the answer and explanation
Answer: D (2)
Explanation
5ˣ⁺¹ + 5ˣ = 5 × 5ˣ + 5ˣ = 6 × 5ˣ = 150, so 5ˣ = 25 = 5² and x = 2.
If it is given that 5x + 1 + 5x = 150 then the value of x is equal to
Answer: D (2)
5ˣ⁺¹ + 5ˣ = 5 × 5ˣ + 5ˣ = 6 × 5ˣ = 150, so 5ˣ = 25 = 5² and x = 2.