Question

Give three examples of identity (a+b)(a-b) =a^-b^

Answer 1

example 1:

(4+3) (4-3) = 4^ - 3^

4 (4 - 3) + 3 (4 - 3) = 4^ - 3^

4^ - 12 + 12 - 3^ = 4^ - 3^

4^ + 0 - 3^ = 4^ - 3^

4^ - 3^ = 4^ - 3^

example 2:

(7 + 5) (7 - 5) = 7^ - 5^

7 (7-5) + 5 (7-5) = 7^ - 5^

7^+35 - 35 -5^ = 7^ - 5^

7^ + 0 - 5^ = 7^-5^

7^ - 5^ = 7^- 5^