rose6038
13.03.2020 •
Mathematics
2 Solve by factoring
y = x² +8x-9
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Ответ:
Step-by-step explanation:
Sum = 8
Product = -9
Factor = 9 , -1
y = x² + 8x - 9
= x² -1x + 9x - 9
=x(x - 1) + 9(x - 1)
= (x - 1)(x + 9)
Ответ: