Question

if one of the zeroes of polynomial 2x^2+px+4is 2 , find the other root and also find the value of p . ......plz fast

Answer 1

sum of zeroes = -p/2

So 2 + x = -p/2

Also product of zeroes = 4/2 = 2

2 x = 2

x = 1

So 2+1 = -p/2

3 = -p/2

p = -6

Answer 2

hey sis here is your answer

If 2x²+px+4=0               given α=2
⇒αβ=c/a
⇒2β=4/2
⇒β=1

⇒α+β=-b/a
⇒2+1= -p/2
⇒p= -6

hope it helps you dear