Question

x³+x³+24x+24 please answer my with the help of (a+b)³ property no spam answers​​

Answer 1

Answer:

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Ncert solutions

Grade 8

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Chapters in NCERT Solutions - Mathematics , Class 8

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Exercises in Playing with Numbers

Question 3

Q3) If 24x is a multiple of 3, where x is a digit, what is the value of x? (Since 24x is a multiple of 3, its sum of digits 6 + x is a multiple of 3; so 6 + x is one of these numbers: 0, 3, 6, 9, 12, 15, 18, ... . But since x is a digit, it can only be that 6 + x = 6 or 9 or 12 or 15. Therefore, x = 0 or 3 or 6 or 9. Thus, x can have any of four different values.)

Solution 3:

For 24x to be divisible by 3

2+4+x = 3,6,9,12,15

6+x = 3,6,9,12,15

therefore, x can be 0,3,6,9

there are two many answers because 6 can be added to any other one digit to make it any other no. divisible by 3.