Question

2/3 Marks

67 / 138 Marks
If a = -3, find the value of
a) 2a
b) a ^2
c) 3a^2

Answer 1

- 6, 9 and 27

Explanation:

Substitute a = - 3 into the expressions and evaluate

(a)

2a = 2(- 3) = - 6

(b)

a² = (- 3)² = 9

(c)

3a² = 3(- 3)² = 3(9) = 27