Answer:(b). 4I2-81
Step-by-step explanation:(2I+9)(2I-9)
=4I2-18I+18I-81
=4I2-81
8x7x6 = 336. There are 8 possible options for slot 1, then 7 for 2, and 6 for the last slot.
Answer:
6x^(3)-4x^(2)+15x-10
Step-by-step explanation:
Answer: C
Step-by-step explanation: The opposite of a positive integer (18) is -18
Which also means its value is 18
Hope this helps!