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If m is a real number and 2x^2+mx+18 has two distinct real roots, then what are the possible values of m? Express your answer in interval notation.

 Feb 13, 2022
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two distinct real roots means the discriminat of the quadratic formula , b^2 - 4 ac , is greater than zero

 

m^2 - 4(2)(18) > 0      solve for   +- m

 Feb 14, 2022

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