Ответ:
(
3
1
c−
11
4
d)∗(
c+
d)=
9
c
2
−
121
16
d
.
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Ответ:
(
3
1
c−
11
4
d)∗(
3
1
c+
11
4
d)=
9
1
c
2
−
121
16
d
2
.