Question

If one root of the equation 2x² -10+p = 0 , is 2 then, find the value of p​

Answer 1

2x^2-10+p=0
2(2)^2-10+p=0
2(4)-10+p=0
8-10+p=0
-2+p=0
p=2

Answer 2

Sum of roots

2+p= -b/a

2+p=10/2

2+p=5

Therefore

p=3