Find m to that the inequality $\displaystyle (m-3)x^2+4x+m<0$ is valid for all values of x, except for one. Answer: $\displaystyle m=-1$
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Originally Posted by Apprentice123 Find m to that the inequality $\displaystyle (m-3)x^2+4x+m<0$ is valid for all values of x, except for one. Answer: $\displaystyle m=-1$ Hi You must have the discriminant equal to 0 (which gives m=-1 or m=4) and m-3 < 0 Therefore m=-1 is the only possibility
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