Question

factorise
m^2-121 plzzzzzzzzzzzzzzzzzzzzzzzzzzszzzzzzz

Answer 1

$<h4>m^2 - 121$

=> m^2 - 11^2

Using identity : a^2 - b^2 = ( a-b ) (a +b )

=> ( m - 11 ) ( m + 11 )

Answer 2

HEY MATE!!
HERE IS YOUR ANSWER.. ⬇⬇

$m {}^{2} - 121 \\ = (m) {}^{2} - (11) {}^{2} \\ = \: (m + 11) \: (m - 11)$
BY USING THE IDENTITY ✔✔
$a {}^{2} - b {}^{2} \\ = (a + b) \: (a - b)$
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