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What property do we use to check that our factored form is equivalent to the standard form

User Fahad
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Lets solve an example:


\begin{gathered} y=x^2+6x+8 \\ \end{gathered}

this quadratic polynomial is in standard form. We can write the same polynomial in factored form as


y=(x+4)(x+2)

In the case of quadratic polynomials, a fast check is

that is, 4 plus 2 must be equal to 6 in the term 6x and

4 times 2 must be 8 in the constant term, which is 8.

What property do we use to check that our factored form is equivalent to the standard-example-1
User Hatef
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