Answer Details:

as the vertex should be 4 units above the x-axis so the value of y should be 4

subtract 4 on both side the eq we get 

x² + 2px + 13 -4 = y - 4 

x² + 2px + 9 = y- 4 

making x a pefect square p = 3 , -3 

Do you like the answer?   Yes | No

Approved / Disapproved policy, check and win exciting gifts