Mathematics, 28.12.2019 16:31 lilly9645

Rationalise. 1 divided by(√6-√11+√5)

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Answer from: shayyy49

  1 (sqrt6 +(sqrt11 +sqrt5))
= =
(sqrt6 -(sqrt11 +sqrt5)) (sqrt6 -(sqrt11 +sqrt5)) *(sqrt6 +(sqrt11 +sqrt5))

(sqrt6 +(sqrt11 +sqrt5)) sqrt6 +sqrt11 + sqrt5
= = =
  6 -(sqrt11 +sqrt5)^2 (6 -(11 +2sqrt11 *sqrt5 +5)

sqrt6 +sqrt11 +sqrt5 (sqrt6 +sqrt11 +sqrt5)(10 -2sqrt55)
= = - =
- 10 - 2sqrt55 (10 +2sqrt55)(10 -2sqrt55)

  (sqrt6 +sqrt11 +sqrt5)(10 -2sqrt55)
= -   =
100 -4*55

  (sqrt6 +sqrt11 +sqrt5)(10-2sqrt55)
= - =
100 -220

  (sqrt6 +sqrt11 +sqrt5)(10-2sqrt55)
= - =
- 120

  (sqrt6 +sqrt11 +sqrt5)(10-2sqrt55)
=
120

hope this will help you

Answer from: katiedelgadillo

1/(√6-√11+√5)=1 / [(√6+√5) -(√11)]

1 / [(√6+√5) -(√11)]=[1 / [(√6+√5) -(√11)]*[(√6+√5) +(√11)] / [(√6+√5)+(√11)]=
=(√6+√5+√11) / [(6+2√30+5) - 11]=
=(√6+√5+√11) / 2√30=
=(√6+√5+√11)*(2√30) / (2√30*2√30)=
=(√6+√5+√11)*2√30 / 120=
=(√6+√5+√11)*√30/ 60=
=(√180+√150+√330) / 60

1/(√6-√11+√5)= (√180+√150+√330) / 60

To check:
1/(√6-√11+√5)=0.7304959

(√180+√150+√330) / 60=0.7304959...

Answer from: Quest

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

hope to and hope that my answer is brainliest.(follow me )

Answer from: Quest

if she was to only spend a dollar she can get 1lb

step-by-step explanation:

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Rationalise. 1 divided by(√6-√11+√5)...

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