Answer: 12x - 4
Step-by-step explanation:
You must distribute the 4 across (x-1), which would be (4x-4), since x*4=4x and -1*4=-4.
The problem with C is that the 4 didn't multiply a negative 1, it multiplied a positive 1.
Answer:
12x-4
First you do parenthesis. 4 times x is 4x and 4 times -1 is -4.
Now you have 8x + 4x -4
Add 8x and 4x which gives you 12x - 4.
