Question

simplify 2√45-5√20+√80​

Answer 1

Answer:

0

Step-by-step explanation:

√45 = 3√5

2√45 = 2 ( 3√5 )

2√45 = 6√5

√20 = 2√5

5√20 = 5 ( 2√5 )

5√20 = 10√5

√80 = 4√5

2√45 - 5√20 + √80

= 6√5 - 10√5 + 4√5

= 6√5 + 4√5 - 10√5

= 10√5 - 10√5

= 0