Solve f(x)=x²+7x+12/-x²-3x+4

1 answer:

8 0

$x^2+7x+12=x^2+4x+3x+12=x(x+4)+3(x+4)=(x+4)(x+3)\\\\-x^2-3x+4=-(x^2+3x-4)=-(x^2+4x-x-4)\\\\=-[x(x+4)-1(x+4)]=-(x+4)(x-1)\\\\f(x)=\dfrac{x^2+7x+12}{-x^2-3x+4}=\dfrac{(x+4)(x+3)}{-(x+4)(x-1)}\\\\\text{The domain:} x\neq-4\ and\ x\neq1\\\\canceled\ (x+4)\\\\f(x)=\dfrac{x+3}{-(x-1)}=-\dfrac{x+3}{x-1}\ for\ x\neq-4\ and\ x=1$

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Length (L): L

width (w): (2/3)L

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2 years ago

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AD = 42-x

The bisector of an angle of a triangle divides the opposite side into segments that are proportional to the adjacent sides ⇒
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Svet_ta [14]

Answer:

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Step-by-step explanation:

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$v(t) = \frac{d}{dt}h(t)$ (1)