(i) 60x2 – 70x – 30
(ii) x2 – 6xy – 7y2
Answer :
(i) 60x2 – 70x – 30
Take out common in all terms we get,
10(6x2 – 7x – 3)
10(6x2 – 9x + 2x – 3)
Again, take out common in all terms we get,
10(3x(2x – 3) + 1(2x – 3))
10(2x – 3) (3x + 1)
(ii) x2 – 6xy – 7y2
x2 – 6xy – 7y2
x2 – 7xy + xy – 7y2
Take out common in all terms we get,
x(x – 7y) + y(x – 7y)
(x – 7y) (x + y
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