√(81/40) √81/√40=9/√40 In order to rationalize the denominator, I begin by factoring the denominator 40. 40 = 2 x 2 x 2 x 5 I am not getting anywhere with this line of logic. What am I doing wrong??
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Originally Posted by mcruz65 √(81/40) √81/√40=9/√40 In order to rationalize the denominator, I begin by factoring the denominator 40. 40 = 2 x 2 x 2 x 5 I am not getting anywhere with this line of logic. What am I doing wrong?? Tonio
Originally Posted by mcruz65 √(81/40) √81/√40=9/√40 In order to rationalize the denominator, I begin by factoring the denominator 40. 40 = 2 x 2 x 2 x 5 I am not getting anywhere with this line of logic. What am I doing wrong?? Hi mcruz65, You have it down to Let's think of the largest perfect square factor of 40. That would be 4 because 4 times 10 is 40. So, rewrite Now, to rationalize the denominator, we must multiply both numerator and denominator by .
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