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a²+3a
a²+4a+3.
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I hope you understand..
make as branillest
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Answered by
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Answer:
a²+3a= a(a+3)
a²+4a+3
(a)² +(3+1)a + 3×1= x² +(a+b)x +ab
=(a+3) (a+1)
hope it helps
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