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vivado [14]
3 years ago
10

Consider f(x) = 2x2 + 1 and g(x) = 3x − 6. Which statement about f + g is true?

Mathematics
1 answer:
disa [49]3 years ago
7 0

Given:

The two functions are:

f(x)=2x^2+1

g(x)=3x-6

To find:

The correct statement about the function f+g.

Solution:

We have,

f(x)=2x^2+1

g(x)=3x-6

Adding both functions, we get

f+g=f(x)+g(x)

f+g=2x^2+1+3x-6

f+g=2x^2+3x-5

It is a quadratic function. So, option A is incorrect and option B is correct.

The domain of f+g is all real numbers because it is defined for all real values of x. So, option C is incorrect.

The range of f+g cannot be the all real numbers because it has a minimum value of y as the leading coefficient is positive. So, option D is incorrect.

Therefore, the correct option is B.

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