Question 5 (i)
When a = 0, b = -1, find the value of the given expression: 2a + 2b
Find the value of expression 2a - 2b - 4 + a + b, taking a = 2 and b = 3.
Question 5 (iii)
When a = 0, b = -1, find the value of the given expression: 2a2b+2ab2+ab