12. Classify the triangle by side length and angle measurement. (1 point) A. equilateral, acute B.isosceles,obtuse C. isosceles,
acute D. scalene, obtuse
1 answer:
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Answer:
Step-by-step explanation:
The discriminant is found in
which is part of the quadratic formula. In
, a = 4, b = 10, c = -16. Filling in for the discriminant:
It's positive so we know we have real roots; it's not a perfect square, so our solutions are 2 complex rational.
In , a = -16, b = -7, c = 3. Filling in for the discriminant:
It's positive and not a perfect square so the 2 solutions are complex rational