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DIA [1.3K]
3 years ago
9

Factor the expression. 3x + 21

Mathematics
2 answers:
julsineya [31]3 years ago
7 0

Step-by-step explanation:

3(x +7)

x=7

( 3x+12 )= 3

HOPE THIS HELPS:)

Delicious77 [7]3 years ago
5 0

Answer: 3  ( x + 7 )

Step-by-step explanation:

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Y = 2 - 4x input output
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Every function is a rule which tells you how to associate inputs and outputs. The input, also known as independent variable, is often indicated with the letter x, while the output, also known as dependent variable, is often indicated with the letter y.

With this notation, we write y = f(x), read "y is a function of x", in the sense that the value of the variable y depends on the value of the variable x, and f is the function that tells you how y depends on x.

In your example, you have y = f(x) = 2-4x, which means "subtract four times the input (4x) from 2"

So, it doesn't matter which input you chose (i.e. the value for x), because you will always have to behave this way:

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Here are some examples of explicit calculations: if I choose x = 2 and input, the workflow will be

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