Question

If a=-3 what is 3a² in this calculation

Answer 1

27

Explanation:

substitute -3 as a

so it will be 3 x -3 squared

indices comes first so -3 x -3 is 9 negative multiply by a negative is a positive

and then 3 x 9 = 27

Answer 2

Explanation:

3a² = 3*(-3)² = 3* (-3)*(-3) = 27