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krok68 [10]
3 years ago
6

What is the domain and range of f(x)=2x^2+6x+2

Mathematics
1 answer:
lbvjy [14]3 years ago
3 0

As is the case for any polynomial, the domain of this one is (-infinity,  +infinity).

To find the range, we need to determine the minimum value that f(x) can have.  The coefficients here are a=2, b=6 and c = 2,

The x-coordinate of the vertex is  x = -b/(2a), which here is x = -6/4 = -3/2.

Evaluate the function at x = 3/2 to find the y-coordinate of the vertex, which is also the smallest value the function can take on.  That happens to be y = -5/2, so the range is [-5/2, infinity).

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Answer:

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Step-by-step explanation:

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What value of x makes the equation 3(x-6)-8x= -2+5(2x+1) true
QveST [7]

Answer:

x= −7/5

Step-by-step explanation:

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−5x+−18=10x+3

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Step 2: Subtract 10x from both sides.

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Step 3: Add 18 to both sides.

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Step 4: Divide both sides by -15.

Hope this helps! :)

4 0
3 years ago
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8 0
3 years ago
Ashley, Kevin, and Deshaun served a total of 96 orders Monday at the school cafeteria. Kevin served 4 times as many orders as De
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2 years ago
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