1.

Factor 9(x+y)^2 - (x-y)^2

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Answer:

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Algebra Examples

Popular Problems Algebra Factor 9-(x+y)^2

9

(

x

+

y

)

2

9-(x+y)2

REWRITE

9

9 as

3

2

32.

3

2

(

x

+

y

)

2

32-(x+y)2

Since both terms are perfect squares, factor using the difference of squares formula,

a

2

b

2

=

(

a

+

b

)

(

a

b

)

a2-b2=(a+b)(a-b) where

a

=

3

a=3 and

b

=

x

+

y

b=x+y.

(

3

+

x

+

y

)

(

3

(

x

+

y

)

)

(3+x+y)(3-(x+y))

Apply the distributive PROPERTY.

(

3

+

x

+

y

)

(

3

x

y

)

(3+x+y)(3-x-y)

Factor.

Tap for more STEPS...

(

3

+

x

+

y

)

1

(

x

+

y

3

)

(3+x+y)⋅-1(x+y-3)

Factor out negative.

(

(

3

+

x

+

y

)

(

x

+

y

3

)

)

-((3+x+y)(x+y-3))

REMOVE unnecessary parentheses.

(

3

+

x

+

y

)

(

x

+

y

3

)

-(3+x+y)(x+y-3)



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