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2 March, 15:12

How many real solutions does p^2-5p+7=0 have

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  1. 2 March, 16:31
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    Let's work out the discriminant b^2 - 4ac:-

    D = (-5) ^2 - 4*1*7 = 25 - 28 = - 3

    A negative discriminant shows that there are NO real solutions Answer
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