Question

Evaluate the expression a² + 6ab for a = - 2 and b = 4.

Answer 1

The given expression is:

`a^2+6ab`

Substitute the values a=-2 and b=4 into the expression:

`\begin{gathered} (-2)^2+6*(-2)*(4) \\ =4+(-48)=4-48=-44 \end{gathered}`

The value of the expression at the given values is -44.