Algebra-1

Let's expand each of the given formulas using the formula (a + b)(a - b) = a² - b²:

For option A:
a = 5y, b = 4
then, (5y + 4)(5y - 4) = (5y)² - (4)² = 25y² - 16

For option B:
a = 5y, b = 2
then, (5y + 2)(5y - 2) = (5y)² ...