Answer:
x² - x - 6
Step-by-step explanation:
Step 1: Write expression
(5x² + 2x - 5) - (3x² + 3x + 1)
Step 2: Distribute negative
5x² + 2x - 5 - 3x² - 3x - 1
Step 3: Combine like terms (x²)
2x² + 2x - 5 - 3x - 1
Step 4: Combine like terms (x)
x² - x - 5 - 1
Step 5: Combine like terms (constants)
x² - x - 6
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552015000/2=>276007500 / ((24*60)/2)= approx. 383343.75 cigarettes are smoked in two minutes in america.
1 min = 60 s;
24 min = 24 x 60 s = 1440 s;
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1h = 60 min = 3600s;
2h = 7200s;
2h 17 min = ( 3600 + 17x60 ) s = ( 3600 + 1120 )s = 4720s;
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1zi = 24h = 1440 min = 86400s;
2h = 7200s;
15min = 900s;
1zi2h15min = (86400 + 7200 + 900)s = 94500s;
