Use the discriminant to describe the root of each equation 3x^2-10=0

Given a quadratic equation

The discriminant is defined as

In your case, the equation is defined by the coefficients

So, the discriminant is

The discriminant is involved in the solving formula as follows:

Which implies that:

In your case, since the discriminant is positive, you have two distinct solutions. Since 120 is not a perfect square, however, you will not get rid of the square root, so you will have two distinct irrational solutions.

the answer is b

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answer: d.) the total number of protons and neutrons is 15

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