9 grade maths
Questions 3 complete sollution. ..plz fasst............
Questions 3 complete sollution. ..plz fasst............
1 Answer
Aakarsh
We know every positive integer can be represented in any one of these forms: 3x, 3x+1, 3x+2 where xis an integer greater than or equal to 0.
Case 1: a=3x
Clearly numerator is divisible by 3 as a is divisible by 3.
Case2: a=3x+1
Numerator= (3x+1)(9x^2+1+6x+2)
=3 (3x+1)(3x^2+2x+1), which is also divisible by 3.
Case 3: a=3x+2
Numerator= (3x+2)(9x^2+4+12x+2)
=3 (3x+2)(3x^2+4x+2), which is also divisible by 3.
Hence proved.
Other Related Questions on 9 grade maths
What are the differences between similar triangles and congruent triangles?
What are the differences between similar triangles and congruent triangles?
9 grade maths
Last Activity: 11 Months ago
The L.C.M of the smallest 2 digit composite number and the smallest composite number is:
- (a) 12
- (b) 4
- (c) 20
- (d) 44
The L.C.M of the smallest 2 digit composite number and the smallest composite number is:
- (a) 12
- (b) 4
- (c) 20
- (d) 44
9 grade maths
Last Activity: 11 Months ago