i will mark you branliest definitely if you solve correctly ...Examine if 398 is a perfect cube . If not , then find the smallest number that must be subtracted from 398 to obtain a perfect cube .solve this by prime factorisation method. ans-55
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Factor of 398 = 2 × 199
As both are prime no. and none of the factors are in a product of pair of 3 equal prime no. it is not a cube.
343 = 7 × 7 × 7
As you can see 343 forms product of pair of 3 equal prime factors it is a cube.
398 - 343 = 55 must be subtracted
As both are prime no. and none of the factors are in a product of pair of 3 equal prime no. it is not a cube.
343 = 7 × 7 × 7
As you can see 343 forms product of pair of 3 equal prime factors it is a cube.
398 - 343 = 55 must be subtracted
jitendrakapse:
ok. If you have any doubt you can ask me any time.
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it means a lot day after tomorrow is my math's exam so i ask some question tomorrow
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