Please help me with this problem so I can help my son better understand I have attached an image of what were working on. Multiply.(3x+1)(x−1) Express the answer in standard form.Enter your answer in the box.

Please help me with this problem so I can help my son better understand I have attached an image of what were working on Multiply3x1x1 Express the answer in sta class=

Respuesta :

Explanation:

We are told to express the given question in standard form,

To do this, we will use the FOIL method

This is method is shown below

In solving the question

[tex](3x+1)(x-1)[/tex]

Applying this, we will have

[tex]\begin{gathered} First=3x\times x=3x^2 \\ Outer=3x\times-1=-3x \\ \text{Inner}=1\times x=x \\ \text{Last}=1\times-1=-1 \end{gathered}[/tex]

Therefore the standard form will be to combine the terms above and then simplify

[tex]\begin{gathered} =3x^2-3x+x-1 \\ =3x^2-2x-1 \end{gathered}[/tex]

Therefore, the answer in standard form is

3x²-2x-1

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