Question

3a - √(a² + b²)When a = -6 and b = 8Evaluate the expression

Answer 1

We have to evaluate the expression:

`3a-√(a^2+b^2)`

where a = -6 and b = 8.

To do that we replace a and b with the corresponding values and then calculate the expression:

`\begin{gathered} 3(-6)-√((-6)^2+8^2) \\ -18-√(36+64) \\ -18-√(100) \\ -18-10 \\ -28 \end{gathered}`

Answer: -28