1) It seems you just need to find where the discriminant is greater than or equal to zero.
Show us what you've done so far so we can help you better.
find the range of values of k if the quadratic equation (k+1)x²+3k+5=8kx has real values of x
find the range of values of k if each of the quadratic equations
(i)kx²+4x+k=3 (ii) kx²+kx+1=3x has real roots
i tried to solve them but i couldnt manage and tmrw i need to hand them in!