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Gnom [1K]
3 years ago
13

A function is represented by the equation y = x(x+3). If the input is -2, what is the output?

Mathematics
1 answer:
Andrews [41]3 years ago
7 0
Answer: -2
Y = x(x+3)
Y = (-2)((-2)+3) * Distribute*
Y = 4 - 6
Y = -2
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Step-by-step explanation:

Area of a rectangle is L\cdot W.

We know the width, W, is x-3 and we know the area is x^2-9.

Inputting this in our formula above we get:

x^2-9=L(x-3)

L is a an expression such that when you multiply it to (x-3) gives you (x^2-9).

x^2-9 is a difference of squares and can be factored using:

a^2-b^2=(a-b)(a+b).

x^2-9=(x-3)(x+3).

So L=x-3 and W=x+3.

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Step-by-step explanation:

Given

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Area is

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The area of the triangle is given by

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Insert the values to get the height

\Rightarrow \dfrac{51}{10}=\dfrac{1}{2}\times \dfrac{17}{5}\times \text{height}\\\\\Rightarrow \text{height}=3\ in.

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Step-by-step explanation:

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