1.

Show that the equation `3x^(2)+7x+8=0` is not true for any real value of x.

Answer» The given equation is `3x^(2)+7x+8=0.`
`:." "D=(7^(2)-4xx3xx8)=(49-96)=-47lt0.`
So, the given equation has no real roots.
Hence, the given equation is not true for any real value of x.


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