Question

simplify:✓45-3√20+4√5

Answer 1

ʜᴇʟʟᴏ ᴍᴀᴛᴇ!

√45 = √( 3 × 3 × 5 ) = 3√5

√20 = √( 2 × 2 × 5 ) = 2√5

3√5 - 2√5 + 4√5

7√5 - 2√5 = 5√5

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs

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 )

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