k square+20k+3, factorize it
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k^2+20k+3
we have first find D=b^2-4ac=400-12=388
D doesn't gain perfect square
so, we use here only quadratic formula
k={-20+_root (388)}/2
we have first find D=b^2-4ac=400-12=388
D doesn't gain perfect square
so, we use here only quadratic formula
k={-20+_root (388)}/2
MarcusBlade:
k= -0.31 or -39.69
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