To find this answer, we need to multiply 3.57 by 12.

Therefore, 12 planks will cost $42.84.
3x(x²-5)
Multiply the bracket by 3x
(3x)(x^2)=3x^3
(3x)(-5)=15x
Answer: 3x^3+15x
Answer:
Mmmmmmmmmmmmm.............
Step-by-step explanation:
MI no sabo amigo perdon