Question

Factorise the following 2z2 – 4z - 6

Answer 1

Step-by-step explanation:

Questions:-

Factories the following

2z²-4z-6

Solution:-

spilt into middle term

2z²-6z+2z-6

2z(z-3)+2(z-3)

(2z+2)(z-3)

2z+2=0 and z-3=0

2z=-2

z= -1 and z=3

Answer:-

value of z is -1 and 3