alebra

Let f(x)=2x^2+x-3 and g(x)=x-1. Perform the indicated operation then find the domain. (f*g)(x)

a.2x^3-x^2-4x+3; domain:all real numbers
b.2x^3+x^2-3x; domain: all real numbers
c.2x^3+x^2+4x-3; domain: negative real numbers
d.2x^3+x-3x+3; domain: positive real numbers

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  1. f(x) = 2x^2+x-3
    g(x) = x - 1

    (f*g)(x) = f(x)*g(x) = (2x^2 + x - 3)*(x - 1)
    = 2x^3 + x^2 - 3x - 2x^2 - x + 3
    = 2x^3 - x^2 - 4x + 3

    All real numbers can be plugged into this function, so its domain is that of all real numbers.

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  2. Function Operations Practice test
    d
    a
    d
    b
    b
    d
    c
    a
    c
    b

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  3. 1. D
    2. A
    3. D

    4. B
    5. B
    6. D

    7. D
    8. A
    9. C
    10. B

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  4. Thanks you guys! Remember, it's only cheating if you're caught.

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  5. coronavirus is right

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  6. I am I the only one seeing that @Corona virus named themself days before quarantine, back when we made all the jokes about it and now we are all still in a pandemic... when they picked that name they never knew what was coming.

    Also 3, 4, and 7 are wrong, so yay!!!

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  7. corona virus is correct, all answers are correct.

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  8. Corona virus still has the right answers for 2022, y’all :)

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  9. 3 is actually 12x^2+2 and 4 is actually x-6.

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