Question

under root 45 + under root 80 - 3 root 20

Answer 1

Step-by-step explanation:

Question asked -

under root 45 + under root 80 - 3 root 20

QUESTION IN NUMBER -

√45 + √ 80 - 3√20

Method for solving -

just find out the factor of under root number and by the help of factors , find out the out root number of each term and after performing mathematical expression , we will able to find out the actual result .

solution-

√45 + √80 - 3√20

= √3x3x5 + √ 2x2x2x2x5 -3√ 2x2x5

= 3√5 + 4√5 - 6√5

= 8√5 -6√5

= 2√5 answer