Question

найти дискриминант
3x^2+x-11=0

Answer 1

1+4*3*11=133
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Answer 2

$3x^2+x-11=0\\\\D=b^2-4ac=1^2-4\cdot 3\cdot (-11)=133\\\\x_{1,2}=\frac{-1\pm \sqrt{133}}{6}$