IXL - Perfect square quadratics (Geometry practice)

Find the square. Simplify your answer.

(

–

)

ref_doc_title.

Learn with an example

question

Find the square. Simplify your answer.

(

–

)

key idea

Square of a binomial:

(
a
+
b
)
2
=
a
2
+
2
a
b
+
b
2
(
a
–
b
)
2
=
a
2
–
2
a
b
+
b
2

solution

(

–

)

is the square of a binomial, just like

(

–

)

So, you can find

(

–

)

with this formula:

(

–

)

–

Replace

with

and

with

–

then simplify.

(

–

)

–

(

)

(

)

–

Looking for more? Try these:

Lesson: Expanding expressions

Lesson: Factoring expressions

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Teacher tools

Work it out

Not feeling ready yet? These can help:

W.7Multiply two binomials using algebra tiles

R.10Simplify exponential expressions using the power rule

Lesson: Expanding expressions

Lesson: Factoring expressions

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