2.
Simplify:
28/
root28-root7
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1
Answer:28/root28-root7
we can take out by rationalising
Step-by-step explanation: 28 x root28 + root 7 / root28-root7 x root28 + root 7
denominator = root 28 sq - root 7 sq
by using the property (a-b)(a+b)= a sq -bsq
= 28 - 7
= 21
answer : 28 x root28 + root 7 / 21
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