IXL - Factor quadratics: special cases (Algebra 1 practice)

Factor completely.

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Learn with an example

question

Factor completely.

key idea

Factoring perfect square trinomials:

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solution

Notice that

is a perfect square trinomial because it can be written in the form

where

and

is 3.

Now use the formula for factoring perfect square trinomials.

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)

(

)

(

)

The factored form of

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)

Finally, check your work.

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)

Expand

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)

(

)

Expand

Apply the distributive property (FOIL)

Yes,

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)

Looking for more? Try these:

Lesson: Factoring expressions

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Teacher tools

Work it out

Not feeling ready yet? These can help:

W.9Multiply two binomials: special cases

X.5Factor quadratics with leading coefficient 1

X.3Factor out a monomial

Lesson: Factoring expressions

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