Question

Q.7 Simplify √45 - 3√20 +4√5​

Answer 1

Answer:

√45-3√20+4√5

=3√5-6√5+4√5

=7√5-6√5

=√5

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Answer 2

Answer:

= √45 - 3√20 + 4√5

=  3√5 -3*2√5 +4√5  

= 3√5-6√5+4√5

=  (3-6+4)√5  

= (-3+4)√5

Answer= √5

(Some are common so that's why it has been removed )

Hope it helps u

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