七年级数学下册用整式乘法公式的计算题 (500)
-
1
1
(2mn
+
)(2mn
-
)
-<
/p>
6m
2
n
2
p>
4
4
4x
-
(2x
+
1)(2
x
-
1)
2
(x
-
3y
+
3z)(x
-
3y
-
< br>3z)
x
x
2
2
(
+
4)
< br>-
(
-
4)
4
4
(
-
6x
+
2)(
-
6x
+
2)
(6x
+
1)(6x
-
1)
1
(
-
x
+
2y)
2
2
1
1
2
-
(
x
-
y)
3
2
3
3
2(
-
x
-
3y)(
x
+
3y)
2
2
1
1
2
2
(3mn
+
)(3mn
-
)
-
4m
n
2
2
5x
2
-
(x
+
3)(x
-
3)
(x
+
3y
+
2z)(x
+
3y
-
2z)
x
x
2
p>
2
(
+
5)
-
(
-
5)
2
2
(
-
2x
-
9)(
-
2x
+
9)
(4x
+
6)(4x
-
6)
1
(
-
x
-
3y)
2
2
1
1
p>
2
-
(
x
+
y)
3
2
1
1
3(
-
x
+
3y)(
x
+
3y)
2
2
1
1
2
2
(3mn
+
)(3mn<
/p>
-
)
-
4m
p>
n
4
4
x
2
-
(x
+
2)(x
-
2)
p>
(4x
-
y
+
p>
z)(4x
-
y
-
z)
x
x
2
(
+
5)
-<
/p>
(
-
5)
2
p>
3
3
(
-
3x
+
2)(
-
3x
-
2)
p>
(3x
-
6)(3x
+
6)
1
(
-
x
+
y)
2
3
1
1<
/p>
2
-
2(
x
p>
+
y)
2
2
1
1
(
-
x
-
3y)(
x
+
3y)
2
2
1
1
(mn
+
)(mn
-
)
p>
-
2m
2
n
2
4
4
5x
-
(3x
+
2)(3x
-
2)
2
(3x
+
2y
+
3z)(3x
+
2y
-
3z)