Algebra Examples

Simplify (3x+5y)(3x-5y)
(3x+5y)(3x-5y)
Step 1
Expand (3x+5y)(3x-5y) using the FOIL Method.
Tap for more steps...
Step 1.1
Apply the distributive property.
3x(3x-5y)+5y(3x-5y)
Step 1.2
Apply the distributive property.
3x(3x)+3x(-5y)+5y(3x-5y)
Step 1.3
Apply the distributive property.
3x(3x)+3x(-5y)+5y(3x)+5y(-5y)
3x(3x)+3x(-5y)+5y(3x)+5y(-5y)
Step 2
Simplify and combine like terms.
Tap for more steps...
Step 2.1
Simplify each term.
Tap for more steps...
Step 2.1.1
Rewrite using the commutative property of multiplication.
33xx+3x(-5y)+5y(3x)+5y(-5y)
Step 2.1.2
Multiply x by x by adding the exponents.
Tap for more steps...
Step 2.1.2.1
Move x.
33(xx)+3x(-5y)+5y(3x)+5y(-5y)
Step 2.1.2.2
Multiply x by x.
33x2+3x(-5y)+5y(3x)+5y(-5y)
33x2+3x(-5y)+5y(3x)+5y(-5y)
Step 2.1.3
Multiply 3 by 3.
9x2+3x(-5y)+5y(3x)+5y(-5y)
Step 2.1.4
Rewrite using the commutative property of multiplication.
9x2+3-5xy+5y(3x)+5y(-5y)
Step 2.1.5
Multiply 3 by -5.
9x2-15xy+5y(3x)+5y(-5y)
Step 2.1.6
Rewrite using the commutative property of multiplication.
9x2-15xy+53yx+5y(-5y)
Step 2.1.7
Multiply 5 by 3.
9x2-15xy+15yx+5y(-5y)
Step 2.1.8
Rewrite using the commutative property of multiplication.
9x2-15xy+15yx+5-5yy
Step 2.1.9
Multiply y by y by adding the exponents.
Tap for more steps...
Step 2.1.9.1
Move y.
9x2-15xy+15yx+5-5(yy)
Step 2.1.9.2
Multiply y by y.
9x2-15xy+15yx+5-5y2
9x2-15xy+15yx+5-5y2
Step 2.1.10
Multiply 5 by -5.
9x2-15xy+15yx-25y2
9x2-15xy+15yx-25y2
Step 2.2
Add -15xy and 15yx.
Tap for more steps...
Step 2.2.1
Move y.
9x2-15xy+15xy-25y2
Step 2.2.2
Add -15xy and 15xy.
9x2+0-25y2
9x2+0-25y2
Step 2.3
Add 9x2 and 0.
9x2-25y2
9x2-25y2
(3x+5y)(3x-5y)
(
(
)
)
|
|
[
[
]
]
7
7
8
8
9
9
4
4
5
5
6
6
/
/
^
^
×
×
>
>
1
1
2
2
3
3
-
-
+
+
÷
÷
<
<
π
π
,
,
0
0
.
.
%
%
=
=
 [x2  12  π  xdx ]