mariaaaaa69
15.01.2021 •
Mathematics
If (x + 1)(x - 3) = 5, then which of the following statements is true?
a.X + 1 = 0 or X-3 = 0
b.O x + 1 = 5 or x - 3= 5
c.X-4 = 0 or x + 2 = 0
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Ответ:
28b-1008=7b
21b=1008
b=48
a/72=28/b
a=72x28/48
a=42