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find the discriminantof the quadratic equation root 2 X square + 7 x + 5 root 2 ​

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[tex]\displaystyle\ 2x^2+7x+5\sqrt{2} =0 \\\\\boxed{D=7^2-4\cdot2\cdot 5\sqrt{2} =49-40\sqrt{2} }[/tex]

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