2x^2-5root2x+4=0 find discriminant
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Answer:
Step-by-step explanation:
Discriminant
\begin{gathered} = \sqrt{ {b}^{2} - 4ac} \\ = \sqrt{ {5}^{2} - 4 \times 2 \times 4 } \\ = \sqrt{25 - 32} \\ = \sqrt{ - 7} \end{gathered}
=
b
2
−4ac
=
5
2
−4×2×4
=
25−32
=
−7
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