write the lowest rationalising factor of √18-√50
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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.
Hope it helps !
= √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.
Hope it helps !
Anonymous:
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Answered by
11
Answer:
√2
Step-by-step explanation:
first do both LCM then take the common out and
you will get 3√2-5√2 =√2(-2)
therefore the least rationalising factor is √2
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