Question

factorise 121y^2 -m^2

Answer 1

Heya ☺

121y^2 - m^2

We use this identity here

a^2 - b^2 = (a + b) (a - b)

121y^2 - m^2

= (11y)^2 - (m)^2

= (11y + m) (11y - m)





Thanks

Answer 2

Hi friend,

Your solution is-
$121y^{2} - m^{2} \\ = (11y)^{2} - (m)^{2} \\ = (11y - m)(11y + m)$
Hope it helped you!
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