If one zero Of polynomial f(x)=(k^2+4)x^2+13x+4k is Reciprocal Of the other find the value of K?
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His model is incorrect because 20 x 7 is not 14, it is 140. If he had 140 instead of 14, he would have been correct.
I haven't done division like that in a long time, so this is what I think it will look like. I didn't add other work (multiplying 4 with #'s) but you can if you have to
