Determine the positive values of k for which both the equation x^2 +kx+64=0
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take x=2
2^2+k2+64=0
4+2k+64=0
2k+68=0
2k=-68
k=-68÷2
k=-34 or 34......(quadratic equations have two solutions)
therefore,positive value of k is 34
2^2+k2+64=0
4+2k+64=0
2k+68=0
2k=-68
k=-68÷2
k=-34 or 34......(quadratic equations have two solutions)
therefore,positive value of k is 34
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