Factorise x³ + 343 y ³
Answers
Answered by
1
Answer:
Factor:
125
x
3
+
343
y
3
Ans:
(
5
x
+
7
y
)
(
25
x
2
−
35
x
+
49
y
2
)
Explanation:
Use the algebraic identity:
a
3
+
b
3
=
(
a
+
b
)
(
a
2
−
a
b
+
b
2
)
125
x
3
+
343
y
3
=
(
5
x
+
7
y
)
(
25
x
2
−
35
x
y
+
49
y
2
)
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