Question

factorise using identities: 405m2 - 495n2​

Answer 1

Answer:

using a+b a - b

(20m + 22n)(20m - 22n)

Step-by-step explanation:

HOPE IT HELPS YOU it's approximate value

Answer 2

Answer:

(20.1m + 22.2n)(20.1 - 22.2)

Step-by-step explanation:

The given question could be converted into the form,

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

Which gives us the conclusion,

$405m {}^{2} - 495n {}^{2}=(20.1m + 22.2n) </p><p>(20.1m - 22.2n)$

We cannot add terms with unlike variables, hence the given question is simplified/ factorised.

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Also,

here a = 20.1m

b = 22.2n

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Hope it helps.....!

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