(i) x3 + x + 2
Above terms can be written as,
x3 + x + 1 + 1
Rearranging the above terms, we get
(x3 + 1) (x + 1)
(x3 + 13) (x + 1)
We know that, a3 + b3 = (a + b) (a2 – ab + b2)
[(x + 1) (x2 – x + 1)] + (x + 1)
(x + 1) (x2 – x + 1 + 1)
(x + 1) (x2 – x + 2)
(ii) a3 – a – 120
Above terms can be written as,
a3 – a – 125 + 5
Rearranging the above terms, we get
a3 – 125 – a + 5
(a3 – 125) – (a – 5)
(a3 – 53) – (a – 5)
We know that, a3 – b3 = (a – b) (a2 + ab + b2)
[(a – 5) (a2 + 5a + 52)] – (a – 5)
(a – 5) (a2 + 5a + 25) – (a – 5)
(a – 5) (a2 + 5a + 25 – 1)
(a – 5) (a2 + 5a + 24)
More Solutions:
- Factorisation of p4 – 81² is
- Factorisation of x²- 4x-12 is
- The factorization of 4x² 8xr +3 is
- Factorisation of r2 – 4xy + 4y2 is
- Factorise 15(2x – 3)3 – 10(2x – 3)
- Factorise 2a2x – bx + 2a2 – b
- Factorise (x2 – y2)z + (y2 – z2)x
- Factorise b(c -d)2 + a(d – c) + 3c – 3d
- Factorise x(x + z) – y (y + z)
- Factorise 9×2 + 12x + 4 – 16y2