Mathematics for IGCSE & O level - Indices 1 (Section 2 - No. 30)
What is the value of 4-2?
-16
-8
1/16
16
คำอธิบาย
A number raised to a negative exponent is equal to the reciprocal of that number raised to the positive exponent. Therefore, 4-2 = 1/42 = 1/16.