Factorise :
a2 + 5a + 6
6 Likes
= a2 + (2 + 3)a + 6
= a2 + 2a + 3a + 6
= (a2 + 2a) + (3a + 6)
= a(a + 2) + 3(a + 2)
= (a + 2)(a + 3)
Hence,a2 + 5a + 6 = (a + 2)(a + 3)
Answered By
5 Likes
(x + y)2 - 3(x + y) - 4 is equal to :
(x + y + 4) (x + y - 1)
(x + y + 4) (x + y + 1)
(x + y - 4) (x + y + 1)
(x + y - 4) (x + y - 1)
60 + 11x - x2 is equal to :
(4 + x) (15 - x)
(4 - x) (15 - x)
(4 - x) (15 + x)
(4 + x) (15 + x)
a2 - 5a + 6
a2 + 5a - 6