Question

Solve the above question? For Class 11​

Answer 1

Answer:

2) 2

Step-by-step explanation:

f(z)=72-36z -26z² +13z³ +2z⁴-z⁵

=36(2-z)-13z²(2-z)+ z⁴(2-z)

=(2-z)(36-13z²+z⁴)

=(z-2)(13z²-z⁴-36)

z = 2 , f(z) =0