Question

(2a + b ) (2a + b ) (a -b)​

Answer 1

Answer:

(2a+b)(2a+b)(a-b)

=(2a+b)^2(a-b)

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

$(2a + b ) (2a + b ) (a -b) \\ \\( 2a + b )^{2} (a \: \: - \: \: b) \\ \\ Will \: \: \: you \: \: \: use \: \: \: the \: \: formula? \\ \\ ( a + b )^{2} \\ a ^{2} + 2ab + {b}^{2} \\ \\ Use \: \: this \: \: \: formula \\ \\ (2a + b ) (2a + b ) (a -b) \\ \\( 2a + b )^{2} (a \: \: - \: \: b) \\ \\ (4a^{2} + 4ab \: \ + b ^{2} )(a \: \: - b) \\ \\ 4 a^{3} + 4 {a}^{2} b \: \: + ab ^{2} - 4 {a}^{2} b \\ - 4 ab^{2} - b ^{3} \\ \\ 4 a^{3} -3 ab ^{2} - b ^{3}$