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CBSE Class 9 Answered

If the denominator is a+ rootb then to rationalize the denominator we multiply by a-rootb. is it true or false?
Asked by | 15 Apr, 2011, 02:02: AM
answered-by-expert Expert Answer
 
yes it is true when we multiply (a-rootb) with both numerator and denominator we get,
1/(a+rootb)*{(a-rootb)/(a-rootb)}=(a-rootb)/(a*a-b) which rationalize the denominator.
 
 
 
Answered by | 15 Apr, 2011, 11:58: AM
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