Question

Evaluate z^2−3z+4, when z = −4

Answer 1

32

Explanation:

(-4)^2 -3(-4) +4=16+12+4

=32

Answer 2

`\implies {\blue {\boxed {\boxed {\purple {\sf {32}}}}}}`

`\sf \bf {\boxed {\mathbb {STEP-BY-STEP\:\:EXPLANATION:}}}`

`{z}^(2) - 3z + 4`

Plugging "
`-4`" for all values of "
`z`", we have

`= ({ - 4})^(2) - 3( - 4) + 4`

`= ( - 4 * - 4) + 12 + 4`

`= 16 + 12 + 4`

`= 32`

`\large\mathfrak{{\pmb{\underline{\red{Mystique35 }}{\red{❦}}}}}`