GoldRush18
Determine the values of the real number h for which the roots of the quadratic equation 4x^22hx+(8h)=0 are real.



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GoldRush18
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i need help!!

eyust707
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I would use the quadratic formula..

GoldRush18
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what answers would i get

eyust707
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you will learn that the answer is of the least importance..
What matters is the method!

eyust707
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Ans thats what open study is all about! I teach you how if you would like.

GoldRush18
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can u teach me please

eyust707
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sure!

eyust707
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have you learned the quadratic formula?

GoldRush18
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yes i have

eyust707
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"x equals negitive b plus or minus the square root b squared minus of four a c all over two a"

GoldRush18
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in this case what would b the value for c

eyust707
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\[x = (b \pm \sqrt{b^2  4 *a *c})/2a\]

eyust707
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well that equation uses this:
\[ax^2 +bx +c = 0\]

eyust707
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a is whatever is in fron of the x^2

eyust707
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so what is a?

GoldRush18
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a is 4

eyust707
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b is whatever is in front of x...

eyust707
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so what is b?

GoldRush18
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2

eyust707
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what about the h? that is in front of x too!

eyust707
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we cant get rid of that... we are ging to use it to make our analysis

GoldRush18
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oh ok