(i) 5x2 + 17xy – 12y2
(ii) x2y2 – 8xy – 48
Answer :
(i) 5x2 + 17xy – 12y2
5x2 + 20xy – 3xy – 12y2
Take out common in all terms we get,
5x(x + 4y) – 3y(x + 4y)
(x + 4y) (5x – 3y)
(ii) x2y2 – 8xy – 48
x2y2 – 8xy – 48
x2y2 – 12xy + 4xy – 48
Take out common in all terms we get,
xy(xy – 12) + 4(xy – 12)
(xy – 12) (xy + 4)
More Solutions:
- Factorise 2a2b2 – 7ab – 30
- Factorise (x – y)2 – 6(x – y) + 5
- Factorise 4(a – 1)2 – 4(a – 1) – 3
- Factorise 3 – 5a – 5b – 12(a + b)2
- Factorise (x + 4)2 – 5xy -20y – 6y2
- Factorise 4(2a – 3)2 – 3(2a – 3) (a – 1) – 7 (a – 1)2
- Factorise (2×2 + 5x) (2×2 + 5x – 19) + 84
- Factorise x2 – 8x + 7
- Factorise y2 + 7y – 18
- Factorise a2 – 3a – 54