the value of p such that the vertex of y=x2+2px+13 is 4 units above the x-axis is?
                   

3 years ago

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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 

3 years ago

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