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There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root.

 

2x^2 - 4x + 8

2x^2 - 12x + 24

-x^2 + 6x + 9

3x^2 - 6x + 3

8x^2 - 4x + 1

 Oct 8, 2020
 #1
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To have 1 root the discriminant will = 0         b2 - 4ac =0     find which one has that, then use Quadratic Formula to find that root.

 Oct 8, 2020

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