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Rationalise the denimination of 12-5 root 3 divide by root 3

Sagot :


to rationalise the denominator u times the numerator and denominator by the denominator so

(12-5√3)/√3 times by √3/√3 which is √12(12-5√3) divided by √3(√3) so now just times the brackets out making 12√3- (5x3)   -because √3 x √3 is 3- divided by 3 - for the same reason

so the answer is (12√3-15)/3 which is 4√3-5

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