What is the h.c.f of a2 - 9 and a2 +4a - 21
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Answered by
1
Answer:
The HCF of a² - 9 and a² + 4a - 21 is
-3 + a
Answered by
0
Answer:
Step-by-step explanation:
a^2+4a-21
=a^2+7a-3a-21
=a(a+7)-3(a+7)
=(a+7)(a-3)
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