Question

Please help me with this

Answer 1

`3z^(2) -10z-5`

Insert the value of z into the equation

`3(4)^(2) -10(4)-5`

`3(16) -40-5`

`48-40-5`

`3`

The value of the expression
`3z^(2) -10z-5` when
`z=4` is 3