Question

Help plz..And No links!! I repeat No links!!

Answer 1

Step-by-step explanation:

Apply foil method.

First,

$4z \times z = 4 {z}^{2}$

Outer,

$z \times - 1 = - z$

Inner,

$4z \times 1 = 4z$

Last,

$1 \times - 1 = - 1$

Add terms.

$4 {z }^{2} + 3z - 1$