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1 vote
1. Factor by grouping
a² + ab - 56b²

User Newred
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1 Answer

6 votes

Answer: (a-7b)(a+8b)

Explanation:

a² + ab - 56b²=

a² + 8ab -7ab - 56b²=

a(a+8b) -7b(a+8b)=(a-7b)(a+8b)

User Raji
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