Question

d) 18y2 - 50 appropriate Identity
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Answer 1

Answer:

Answer

18a2−50=2(9a2−25)

=2\left [ (3a)^{2}-(5)^{2} \right ]$$

We know appropriate identities x2−y2=(x+y)(x−y)

Here x=3a and y=5

∴2[(3a)2−(5)2]

=2(3a−5)(3a+5)