Question

$(2a + b) {}^{3} + (4a + 2b) {}^{3}$
please help me ​

Answer 1

Answer:

(2a + b)^3 + (4a + 2b)^3

= 3 ( 2a + b ) + 3 ( 4a + 2b )

= 6a + 3b  + ( 4a + 2b ) 3

= 6a + 3b + 12a + 6b

= 18a + 9b

Step-by-step explanation:

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