Question

Using indenty evaluate 97× 107


Please say the identy name also which u are using ...​

Answer 1

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

Putting

a = 102

b = 5

$(102 - 5)(102 + 5) \\ \\ {102}^{2} - {25}^{2} \\ \\ 10404 - 25 \\ \\ 10379$

Hope this helps !!