Find the value of k, if the roots of the quadratic equation 2×2-6×+k=0 are real and equal

Question

Find the value of k, if the roots of the quadratic equation 2×2-6×+k=0 are real and equal​

Lydia · Answer

Answer:   9   Step-by-step explanation:   Comparing the question with ax²+by+c=0, we get,    a=1; b=-6; c=k    b2-4ac=0    (-6)²-4×1×k=0  36-4k=0  36=4k  k=9 (4×9=36)

Arianna · Answer

Answer:   2   Step-by-step explanation:   2×2-6×+k=0  4-6×+k=0  -2×+k=0  +k=0+2  k=2

Autumn

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