Question

let's expand (5+a)^3​

Answer 1

Answer:

5^3+a^3+3*5^2*a+3*5*a^2

Step-by-step explanation:

Use (a+b)^3 formula

Final answer:

125+a^3+75a+15a^2

Answer 2

Answer:

5^3÷a^3

Step-by-step explanation:

(5/a)^3=5/a×5/a×5/a

=5×5×5/a×a×a

=5^3÷a^3