Question

 Lowest rationalising factor of (sqroot18-sqroot50) is​

Answer 1

Answer:Q. Write the lowest rationalising factor of √18 - √50.

= √18 - √50

= √ ( 2 × 3 × 3 ) - √ ( 2 × 5 × 5 )

= 3 √2 - 5 √2.

= √2 ( 3 - 5 )

= √2 ( -2 )

= -2 √2

And its rationalising factor will be √2.

The answer is √2.

Step-by-step explanation:

Answer 2

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GIVEN:-

$\sqrt{18 } - \sqrt{50}$

SOLUTION:-

$\sqrt{2 \times 3 \times 3} - \sqrt{2 \times 5 \times 5}$

$= 3 \sqrt{2} - 5 \sqrt{2}$

= -2√2

lowest rationalization = √2