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3 years ago

What is the value of the function f(x) = 2x2 + 3 when x = 2? 7 19 11 –1

Mathematics

2 answers:

gogolik [260]3 years ago

4 0

11 because 2*(2^2)+3 = 2*4+3 = 8+3 = 11

blondinia [14]3 years ago

3 0

Plug in 2 for your x, you'll get 2(2^2)+3, which becomes 2(4)+3, 8+3, 11.

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Answer:

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Step-by-step explanation:

This is a hard one

We have to use the rational root theorem

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We have to find all the factors of a and d and put them in a fraction

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We then plug them into the equation to see if any of them work

The equation isn't true when plugging 1, but is true when plugging in 1/2

factored form of 1/2 is (2x-1)

Then we divide the original equation by (2x-1) (you can use synthetic division or long division, it would be hard to type out the process for that) to get $x^2+4x+1$

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We already know the solution for the first half of the equation (1/2)

So the final answers are:

$x=\sqrt{3}-2, -\sqrt{3}-2, \frac{1}{2}$

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Step-by-step explanation:

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