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For two real values of n, the equation 4x^2+nx+49 has exactly one solution in x. What is the positive value of n?

 Dec 1, 2020
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Presumably, the equation is 4x2 + nx + 49 = 0.

 

This has a single solution when the discriminant is zero; that is when \(n^2-4*4*49=0\)

 

Can you take it from here?

 Dec 1, 2020

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