Question

find the value of : 7a3+56b3​

Answer 1

Step-by-step explanation:

X^3+y^3=(x+y)(x^2-xy+y^2)

7a^3+56b^3

=7(a^3+8b^3)

=7[a^3+(2b)^3]

=7(a+2b)[a^2-2ab+(2b)^2]

=7(a+2b)(a^2-2ab+4b^2)

4

Answer 2

Answer:

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