4 to the second power, also written as 42, means 4 multiplied by itself. In simpler terms, it’s asking what you get when you take the number 4 and multiply it by 4.
So, 4 × 4 equals 16. Therefore, 4 to the second power is 16. This concept comes from the rules of exponents in mathematics, where the exponent indicates how many times to use the base number (in this case, 4) in multiplication.