Question 830422: Find all values of K for which the quadratic equation has two real solutions
9x^2+5x-k=0
Write your answer as an equality or inequality in terms of K
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! ---
9x^2 + 5x - k = 0
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k = 0
9x^2 + 5x = 0
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the above quadratic equation is in standard form, with a=9, b=5, and c=0
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to solve the quadratic equation, by using the quadratic formula, copy and paste this:
9 5 0
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the quadratic vertex is a minimum at: ( x= -0.277777778, y= -0.694444444 )
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answer:
the quadratic has two real roots when k > -0.694444444444444444444444444444444:
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