Question

Help with a Question? (Question Inside)

M E D A L & F A N

Answer 1

Show steps please :)

Answer 2

rationalise it :))

Answer 3

do you know what mean conjugate of ... ? of denominator in this case

Answer 4

so you need multiplie top and bottom by conjugate of denominator and will get the right answer

Answer 5

Ok can you take me though it @jhonyy9

Answer 6

the denominator is sqrt2 -sqrt5

do you know formula of difference of perfect squares = ?

Answer 7

than you know it this will help you sure easy to get the necessary conjugate of sqrt2 -sqrt5

Answer 8

this is formula about i have told you above

a^2 -b^2 =(a-b)(a+b)

can using here now ?

Answer 9

(a-b) is the denominator so how can you using this in your exercise case to simplifie it ?

Answer 10

you dont understand from these nothing plaese ?

Answer 11

sqrt2 -sqrt5 is the denomiator - yes ?

from this formula of diference of perfect squares result that than you multiplie (sqrt2 -sqrt5 by (conjugate what will be (sqrt2 +sqrt5) so will get in denominator 2-5 because (sqrt2)^2 = 2 and (squart5)^2 =5

yes ?

but dont forgot it that you need multiplie the numerator too by conjugate and see what will result - ok. ?

Answer 12

do you have got it ?

Answer 13

Thank you @jhonyy9 !! :)

Answer 14

was my pleasure

bye