Question

X 3 + 64 y 3 =? ????​

Answer 1

It is known that,

a3+b3=(a+b)(a2−ab+b2)

According to the given condition

x3+64y3=x3+(4y)3

⇒x3+(4y)3=(x+4y)(x2+16y2−4xy)

Hence, the answer is (x+4y)(x2+16y2−4xy).

Answer 2

Answer:

x+4y

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