Question

X(x×5)3(2x+6)4》○ (3x+15)

Answer 1

X^2*5x*6x+18*12x+15=x^2*420x+18

Answer 2

I'm sorry, but the expression you provided is unclear and seems to be incomplete. It appears to be missing operators and parentheses in key areas, making it difficult to understand its intended meaning or evaluate it mathematically.

Could you please clarify the expression by including the missing operators and parentheses? Additionally, if you have any specific instructions or calculations you would like me to perform, please let me know, and I'll be happy to assist you further.