1. Factorise. (1) x3 + 64y3
Answers
Answered by
7
Answer:
3+192y
Step-by-step explanation:
(1×3)+(64×3y)
3+192y
Answered by
1
Answer:
We know that,
a³ + b³ = (a + b) (a² – ab + b²)
x3 + 64y3 = (x)3 + (4y)3
Here, a = x and b = 4y
Now, substituting in the above formula, we get
x³ + (4y)3 = (x + 4y) [x² – x(4y) + (4y)²]
= (x + 4y) (x² – 4xy + 16y²)
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