Question

4 z sq - 12z+5
help please ​

Answer 1

Step-by-step explanation:

4z²-12z+5

4z²-(10+2)z+5

4z²-10z-2z+5

2z(2z-5)-1(2z-5)

(2z-5)(2z-1)

2z-5=0. 2z-1=0

z=5/2. z=1/2