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Factorise : a³-8b³
Answers
Answered by
0
Answer:
Reescribe
8
b
3
como
(
2
b
)
3
.
a
3
−
(
2
b
)
3
Como ambos términos son cubos perfectos, factorizar utilizando la fórmula de diferencia de cubos,
a
3
−
b
3
=
(
a
−
b
)
(
a
2
+
a
b
+
b
2
)
, donde
a
=
a
y
b
=
2
b
.
(
a
−
(
2
b
)
)
(
a
2
+
a
(
2
b
)
+
(
2
b
)
2
)
Answered by
21
Answer
a-8b
Explanation
because the power of variable is same in a and b i.e 3
so 3-3 = 0
Therefore, a³-8b³ = a-8b
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