Question

(1) 179 x 179 - 21x21​

Answer 1

Answer:

$179 \times 179 - 21 \times 21$

$= {179}^{2} - {21}^{2}$

$= (179 + 21)(179 - 21)$

$= (200)(158)$

$= 31600$

BY USING THE IDENTITY,

(a+b)(a-b) = a²-b²

Answer 2

Hope you got the answer, buddy....