Substitution
Given that a = 5, find the values of:
(a) a + 6 (b) a – 3 (c) 3a (d) 5a – 2 e) 50 – a2
Given that b = -3, find the values of:
(a) b + 8 (b) b – 1 (c) 4b (d) 4b – 3 e) a2 + 2b
Given that a = 10, b = 2 and c = 7, find the value of:
(a) a + b (b) c – b (c) 2c + b (d) a + b – c (e) 5 + 3b (f) 100 – 4a
Quadratic Expressions:
a) Find the value of x2 + 1 when x = 4 b) Find the value of x2 – 7 when x = 5
c) Find the value of x2 + 2x when x = 3 d) Find the value of x2 – 7x when x = 6
e) Find the value of (10 – x)2 when x = 2 f) Find the value of x2 + 4x – 1 when x = 3
g) Find the value of (2x)2 when x = 6 h) Find the value of (3x)2 – 8 when x = 4