Simplify:
(a) c + c + c + d + d (b) (n + n) - (m + m + m) (c) 3a + 6b - a - 2b
(a) 2c+2d
(b) 2n - 3m
(c) 2a +4b
Get the algebraic expressions in the following :
(i) One-fourth of the product of numbers p and q.
(ii) Number 5 added to three times the product of numbers m and n.
(i) pq/4
(ii) 5+3mn
Factorise:
(a) 3x + mx
(b) 25x + 20
(a) x(3+m)
(b) 5 (5x + 4)
Suppose we have 5 bags which contain some oranges. Find how many oranges are present if each bag contains:
(a) y orange and there are 2 leftover
(b) t oranges and there are r left over
(a) 5y + 2 oranges
(b) 5t + r oranges
Find the value of the following expressions when n = – 2.
(i) 5n – 2 (ii) 5n^2 + 5n – 2 (iii) n^3 + 5n^2 + 5n – 2
(i) – 12
(ii) 8
(iii) 0
Write down the coefficient of x in each of the following:
(i) 5y - 2 + 2x
(ii) 8 - 3x
(i) 2
(ii) -3
Factorise:
(a) 2x^3 + 5x^2
(b) x^4 + 2x^3 + 3x^2
(a) x^2 (2x+5)
(b) x^2 (x^2 +2x+3)
Expand the following.
(i) ½(4x - 6y) , (ii) y(y - 3x) + x(3y - 2x)