Question

simplify please tell me the correct option

Answer 1

Answer:

option 3 is the answer

hope this helps you

Answer 2

$using \: (a + b)^{3} = a^{3} + b {}^{3} + 3a {}^{2}b \: + 3b {}^{2} \\ (3x \: + 2 {}^{3} ) = (3x) {}^{3} + (2 {})^{3} + 3(3x) {}^{2}(2) + 3(3x)(2) {}^{2} \\ = 27x {}^{3} + 8 + 54x {}^{2} + 36x \\ \\ now \: using \: (a - b) {}^{3} = (3x){}^{3}- (2) {}^{3} - 3(3x) {}^{2}(2) + 3(3x)(2) {}^{2} \\ = 27x {}^{3} - 8 - 54x {}^{2} + 36x \\ \\ \maltese \huge \green { \: subtract \: both \: of \: them}</p><p>\\ 27x {}^{3} + 8 + 54x {}^{2} + 36x - (27x {}^{3} - 8 - 54x {}^{2} + 36x) \\ = {27x}^{3} + 8 + 54x {}^{2} + 36x \: -27x{}^{3} + 8 + 54x {}^{2} - 36x \\ cancelling \: same \: terms \: out \: \\ = 8 + 8 + 54x {}^{2} + 54x {}^{2} \\ \maltese \mathfrak \red {16 + 108x {}^{2} }$