Question

rationalise 4root5 by 5root7​

Answer 1

Answer:

$4 \sqrt{35 } \: by \: 35$

Step-by-step explanation:

$4 \sqrt{5} \div 5 \sqrt{7 }$

multiply

$5 \sqrt{7}$

On both numerator and denomeniator

$4 \sqrt5 \times 5 \sqrt{7} \: by \: 5 \sqrt{7} \times 5 \sqrt{7}$

$20 \sqrt{35} \: by \: 25 \sqrt{49}$

$20 \sqrt{35 \: \: } by \: 25 \sqrt{7 \times 7}$

$20 \sqrt{35} \: by \: 25 \times 7$

$4 \sqrt{35} \: by \: 35$

Answer 2

Step-by-step explanation:

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