To find the product of the following expression
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You have to distribute the multiplication between the parentheses terms, that is, multiply each term of the first parentheses by each term on the second parentheses.
You have to make a total of four multiplications:

Once you had calculated all multiplications, order the like terms and simplify them, in this case, there are three types of terms, the x² term, the x term, and the constant.
The simplified result is:
