Question

epand the following (a-b)3​

Answer 1

Answer:

3a -3b is the answer of this question

Answer 2

Question :

${(a-b)}^3$

Solution :

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

(or)

Question :

$(a-b)3$

Solution :

$=(a-b) \times 3\\=3a-3b$