Question

(a) 2/3*[-6/7+4/5]=[2/3*4/5]*{-6/7}

Solve Using Appropriate Property

(b) Find the smallest number by which 1323 may be multiplied so that the product is a perfect cube.
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Answer 1

Answer:

b) In order for 1323 to become a perfect cube, we need to multiply it by 7. This will give us 9261 and the cube root will be 21. On dividing 1323 by 3 and 7 we get 3 x 3 x 3 x 7 x 7.

So the answer is that 1323 must be multiplied with 7 to become a perfect cube

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