Factor yz + 6 + y +6z.
z + 1)(y + 6)
(z - 1)(y + 6)
(z + 6)(y - 1)

The answer is the first one: (z+1)(y+6).

Explanation:

yz + 6 + y + 6z

= yz + y + 6 + 6z

= y(z+1) + 6(1+z)

= (z+1)(y+6)

For (z+1), you can also write (1+z), it doesn’t matter.

Hope it helps!

Ineed on quadratic equations to solve problems