Answer:

Step-by-step explanation:
You can use the foil technique (first outer inner last)
(3x - 1)(-x + 4) = (3x · (-x)) + (3x · 4) + ((-1) · (-x)) + ((-1) · 4)
= 
= 
Answer:
4 weeks
Step-by-step explanation:
15 x 8 = 120, so Troy bikes 120 miles each day
3360/120 = 28 days or 4 weeks
Answer:
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Step-by-step explanation:
Step-by-step explanation:
((7²-2×7×3+3²)/8)-1=( 16/8)-1=2-1=1