Question

12a-3b2, when a=9,b=4

Answer 1

Answer:

$12a - 3 {b}^{2} = 12(9) - 3 {(4)}^{2} \\ = 108 - 48 \\ = 60$

Answer 2

Answer:

60

Step-by-step explanation:

Just substitute the value

$12\cdot (9) - 3 \cdot(4)^2 = \\108 - 48 =60$