2 years ago

What is the sum of the roots of the equation 2 x^2 + 5 x − 3 = 0?

Mathematics

1 answer:

Dima020 [189]2 years ago

4 0

Answer:

B) -2.5

Step-by-step explanation:

2x^2 + 5x -3 = 0

(2x - 1)(x + 3) = 0

2x - 1 = 0; 2x = 1, so x = 1/2 = ROOT 1

x + 3 = 0, so x = -3 = ROOT 2

Now add the roots: -3 + 1/2 = - 2 1/2, so the answer is B.

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