2x^2-9x+9 what roots does this polynomial has what kind of roots?

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22-11-2017
Mathematics

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2x^2-9x+9 what roots does this polynomial has what kind of roots?

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roycesiaozrwii roycesiaozrwii · Answer 1 · 2017-11-22T03:34:00+01:00

roycesiaozrwii roycesiaozrwii

22-11-2017

b^2 - 4ac
(-9)^2 - 4 (2)(9)
= 81 - 72
=9 >0 yet it is a perfect square (3^2 =9)
So , it is 2 real and rational roots

(x-3) ( 2x-3) =0
x = 3 , x = 3/2

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