Question

3(m^{2}-2) \text{ when } m=1.5

Explanation:

Substitute the value of m

$$ 3(m^2 - 2) \quad \text{where} \quad m = 1.5 $$

$$ 3((1.5)^2 - 2) $$

Evaluate the exponent

$$ (1.5)^2 = 2.25 $$

$$ 3(2.25 - 2) $$

Simplify inside the parentheses and multiply

$$ 2.25 - 2 = 0.25 $$

$$ 3(0.25) = 0.75 $$

Answer:

\(0.75\)