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Byju's Answer
Standard VIII
Mathematics
Finding Square of a Number Using Identity
Multiply: 3x...
Question
Multiply:
(
3
x
−
5
y
+
7
z
)
by -3xyz
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Solution
(
3
x
−
5
y
+
7
z
)
(
−
3
x
y
z
)
=
(
−
9
x
2
y
z
+
15
x
y
2
z
−
21
x
y
z
2
)
(Ans.)
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