Solve: 2\(^{√2x + 1}\) = 32

  • A 13
  • B 24
  • C 12
  • D 11
waec 2021mathematics

The correct answer is C. 12

2\(^{√2x + 1}\) = 32

2\(^{√2x + 1}\) = 2\(^5\)

√2x + 1 = 5

square both sides

2x + 1 = 5\(^2\)

2x + 1 = 25

2x = 25 - 1

2x = 24

x = \(\frac{24}{2}\)

x = 12

Previous question Next question