maddy6882
30.09.2019 •
Advanced Placement (AP)
What number of fe atoms and what amount (moles) of fe atoms are in 500.0 g of iron?
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Ответ:
Ответ:
(5x + 3)(x + 5)
Use Foil (first, outer, inner, last)
First is 5x multiplied by x which is 5x^2
Outer is 5x multiplied by 5 which is 25x
Inner is 3 multiplied by x which is 3x
Last is 3 multiplied by 5 which is 15
Now we have 5x^2 + 25x + 3x + 15, combine like terms and you get:
5x^2 + 28x + 15