Calculate the discriminant to determine the number of real roots. y = x^2 + 3x + 9 How many real roots does the equation have? A. two real roots B. one real root C. no real roots D. no solution to the equation
what is tat profile pic from? it looks so awesome (sorry for being that guy)
well the discriminant is \[\Delta = b^2 - 4ac\] and is part of the general quadratic formula so the conditions for the discriminant are two unequal real roots \[\Delta > 0\] two equal roots \[\Delta = 0\] No real roots \[\Delta < 0\] in your question you have a = 1, b = 3 and c = 9 substitute and calculate the answer... then compare it to the conditions above to determine the types of roots. hope it helps
Thank you so much @campbell_st
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