1.

Using indentities find the value of 72² - 18²​

Answer» ONG>Step-by-step EXPLANATION:

{a}^{2}  -  {b}^{2}  = (a + b) \: (a - b)

=  > (72 + 18)(72 - 18) \\ = (90)(54) \\  = 4860

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