Question

Solve this question​

Answer 1

$\huge\bold\red{Hey!}$

${4z}^{2} - 16z + 15 \\ {4z}^{2} - (10 + 6)z - 15 \\ {4z}^{2} - 10z - 6z - 15 \\ 2z(2z - 5) - 3(2z - 5) \\ (2z - 3)(2z - 5)$

Answer 2

Step-by-step explanation:

4z^2-16z+15

=4z^2-10z-6z+15

=2z(2z-5) - 3(2z-5)

=(2z-5) (2z-3)