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©2026 数学クラブ http://sugaku.club/
月 日( )
● 次の式を,指数を使って書きましょう
[074-00]
(1)
(
−5
)
×
(
−5
)
(2)
(
x
+
y
)
×
(
x
+
y
)
×
(
x
+
y
)
(3)
p
×
p
×
p
×
p
×
p
(4)
(
−9
)
×
(
−9
)
(5)
9
×
9
×
9
×
9
(6)
9
×
9
×
9
(7)
(
a
+
b
)
×
(
a
+
b
)
(8)
9
×
9
(9)
x
×
x
×
x
×
x
(10)
7
×
7
×
7
©2026 数学クラブ http://sugaku.club/
月 日( )
【解答例】
(1)
(
−5
)
×
(
−5
)
2
=
(
−5
)
(2)
(
x
+
y
)
×
(
x
+
y
)
×
(
x
+
y
)
3
=
(
x
+
y
)
(3)
p
×
p
×
p
×
p
×
p
5
=
p
(4)
(
−9
)
×
(
−9
)
2
=
(
−9
)
(5)
9
×
9
×
9
×
9
4
=
9
(6)
9
×
9
×
9
3
=
9
(7)
(
a
+
b
)
×
(
a
+
b
)
2
=
(
a
+
b
)
(8)
9
×
9
2
=
9
(9)
x
×
x
×
x
×
x
4
=
x
(10)
7
×
7
×
7
3
=
7