Question

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.

Answer 1

Step-by-step 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

`(3x+1)(x-1)`

Applying this, we will have

`\begin{gathered} First=3x* x=3x^2 \\ Outer=3x*-1=-3x \\ \text{Inner}=1* x=x \\ \text{Last}=1*-1=-1 \end{gathered}`

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

`\begin{gathered} =3x^2-3x+x-1 \\ =3x^2-2x-1 \end{gathered}`

Therefore, the answer in standard form is

3x²-2x-1