Which out of the following are expressions with numbers only?
(a) y + 3 (b) (7 × 20) − 8z
(c) 5 (21 − 7) + 7 × 2 (d) 5
(e) 3x (f) 5 − 5n
(g) (7 × 20) − (5 × 10) − 45 + p
Question 2
In which of the following expressions only numbers are used: (a) y + 3 (b) (7×20)−8z (c) 5(21−7)+7×2 (d) 5 (e) 3x (f) 5-5n (g) (7×20)−(5×10)−45+p
(i) Identify the terms and their factors in the following expressions
Show the terms and factors by tree diagrams.
(a) x − 3 (b) 1 + x + x2 (c) y − y3
(d) (e) − ab + 2b2 − 3a2
(ii) Identify terms and factors in the expressions given below:
(a) − 4x + 5 (b) − 4x + 5y (c) 5y + 3y2
(d) (e) pq + q
(f) 1.2 ab − 2.4 b + 3.6 a (g)
(h) 0.1p2 + 0.2 q2