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The quadratic x^2 + bx + 16 = 0 has a double root. Find all possible values of b.

May 7, 2022

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For the equation to have a double root, the discriminant ($$b^2-4ac$$) must equal 0. Substituting what we know, we have: $$b^2-4 \times 16 = 0$$

Now, we have to solve for b.

Can you take it from here?

May 7, 2022