Math, asked by disha1232, 1 year ago

Rationalise the denominator 1/√8-2

Answers

Answered by Kayez

(√8+2)/4. Since, (1/√8-2)*(√8+2/ √8+2)= (√8+2)/(8-4)= (√8+2)/4

disha1232: hey

disha1232: explain 1 n 2nd step

disha1232: please

Kayez: (a+b) (a-b)= a2 -b2 (this is a to the power 2 and b to the power 2)

Kayez: so when you use this formula and multiply an irrational number with itself it will become rational. For example { (a)1/2- b} (a to the power half) when multiplied by {(a)1/2 + b} it becomes {a- (b)2} (b square)

Answered by Suphomie

Hey!!
Here is ur answer in the given attachment

Attachments:

disha1232: thank uhh soo much sistahh ☺☺

Suphomie: Mark as brainiest if helpfull

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