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thanitoast84
23.09.2020 •
Mathematics
The ratio of age of father
and son is 7:3, it
of son is 15 grs, find aga
of father
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Ответ:
(x + 5) (x - 5)
Step-by-step explanation:
x² - 25
This is known as the difference of squares
(x + 5) (x - 5)
Expand it to see the x term cancels out
x² - 5x + 5x - 25
x² - 25