What is 100A2-49B2?

The expression (100A^2 - 49B^2) is a difference of squares, which can be factored using the formula (a^2 - b^2 = (a - b)(a + b)). Here, (100A^2) is ( (10A)^2) and (49B^2) is ( (7B)^2). Thus, the factored form is ((10A - 7B)(10A + 7B)).