Question

If –1, 3 are the two zeroes of the polynomial p(x) = 2x3 – 11x2 + 8x + 21, then third zero of p(x) is

Answer 1

Answer:

answer is 7/2

Step-by-step explanation:

alpha + beta + gamma = -b/a

-1+3+gama = -(-11)/2

-1+3+gama= 11/2

gama = 5.5-2

gama= 3.5

gama= 35/10 = 7/2

hope it helps

Answer 2

Answer:

7/2

Step-by-step explanation:

2x - 7 = 0 ==> 2x = 7

x = 7/2