Algebra-1

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

For option A:
a = 10z, b = 4
then, (10z + 4)(10z - 4) = (10z)² - (4)² = 100z² - 16

For option B:
a = 10z, b = 2
then, (10z + 2)(10z - 2) = (10z)² - (2)² = 100z² - 4<...