Find the values of k for which the following equations have 2 distinct roots.

a)kx^2+kx+2=0
b)kx^2+3k+k=0
c)x^2-2kx+4=0
Im stumped please show working so i can see what needs to be done

The discriminant is b^2-4ac. For more information, check out this website; it's very helpful.

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