Question

if 2x²+bx+5=0, and the sum of two factors is 3
then find, b=?​

Answer 1

Answer:

By the basic relationship in polynomials

We can say,

-b/2 = Sum of roots

So, b = -6

Answer 2

Answer:

Step-by-step explanation:

Sum of roots = alpha + beta = -b/a    = 3

a = 3 - b

product of roots = ab

(3-b)(b)