Question

15/√10+√20+√40-√5-√80 =?​

Answer 1

Answer:

learn it..............

Answer 2

Answer:

√10+√5

Step-by-step explanation:

15/√10+√20+√40-√5-√80

= 15/√10+√4×5+√4×10-√5-√16×5

= 15/√10+2√5+2√10-√5-4√5

= 15/3√10-3√5

= 15/3(√10-√3)

*15/3 is there so 5 will be there in the numerator*

= 5$\frac{5}{√10-√5}$ × $\frac{(√10+√5)}{(√10+√5)}$

= 5(√10+√5)/$(√10)^{2}$ - $(√5)^{2}$

= 5(√10+√5)/10-5

= 5(√10+√5)/5

*5 and 5 will get cancelled*

√10+√5

Hope this helps you!!