College of Admission Tests Multan

Exponents

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 10

The value of x2x - x(xx) when x = 2.
  • 8
  • 4
  • 16
  • 20

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Correct Answer: A

x2x - x(xx) when x = 2

Put the value of x = 2

22× 2 - 2(22)

24 - 2 × 4

16 - 8 = 8