Question

formula of (ab)3 is?

Please Answer This..

Answer 1

ANSWER:

(a-b)^3=a^3-b^3-3ab(a-b)

so 3ab in right side comes left side and becomes positive and positive (a-b)^3 comes right side and becomes negative.

3ab=a^3-b^3-(a-b)^3(a-b)

we get value of 3ab

hope it will help you

Answer 2

Given data: $(ab)^{3}$

To find: the formula's using $(ab)^{3}$.

Solution:

• Formula's are used to simplify math problems.
• Cube is where the given number is multiplied three times.
• For example, cube of 5 : $5^{3}=125$.
• Formula for cubes are,

         $(a - b)^{3} = a^{3} - b^{3} - 3ab(a - b).\\\\(a + b)^{3} = a^{3} + b^{3}+ 3ab(a+ b).\\\\a^{3}+b^{3} =(a+b)(a^{2}+b^{2}-ab).\\\\a^{3}-b^{3} =(a-b)(a^{2}+b^{2}+ab).$