Question

Find the value of √45 +√80 – 3√20​

Answer 1

Answer:

√5

Step-by-step explanation:

root 45 can be written as root over 5*9

3√5

..√80 can be written as

√20*4 = √4*5*4

=4√5

√20 can be written as √4*5

=2√5

=3√5+4√5-3*2√5

=3√5+4√5-6√5

=√5

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Answer 2

=√45+√80-3√20

=√3*5+√2*2*2*2*5-13.41

=8.6+4√5-13.41

=8.6+8.94-13.41

=4.13. Ans