Question

(a+b)^3-3ab(a+b)
please help me with this one and provide step by step solutions ​

Answer 1

Answer:

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

Step-by-step explanation:

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

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