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2 years ago

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

Mathematics

1 answer:

andrew-mc [135]2 years ago

3 0

Step-by-step explanation:

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

$\text{Find (f - g)(x):}$

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

Correct choice is D

$\text{The rest of the parts are confusing since f(x) and g(x) are same as in the first part}$

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3 years ago

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Answer:

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Step-by-step explanation:

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kicyunya [14]

Step-by-step explanation:

Given

x + 2y = 3 and xy = 2
show that x³ + 8y³ + 9 = 0

Solution in steps:

(x + 2y)³ = 3³
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x³ + 6x(xy) + 12y(xy) + 8y³ = 27
x³ + 8y³ + 6(x + 2y)xy = 27 ⇒ Substitute values
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Done

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Answer:

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