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11Alexandr11 [23.1K]
3 years ago
10

Witch expression is the factorization of x2+10x+21

Mathematics
1 answer:
Alenkasestr [34]3 years ago
6 0

Answer:

x^2 +x(7+3) +21

x^2 +7x + 3x +21

x(x+7) +3(x+7)

(x+7) (x+3)

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