Mathematics for IGCSE & O level - Powers And Roots (Section 1 - No. 18)
What operation must be performed first in the calculation 7² - 4²?
Addition
Subtraction
Exponentiation (Squaring)
Multiplication
ব্যাখ্যা
According to the order of operations (PEMDAS/BODMAS), exponents (powers) are calculated before subtraction.