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Can someone help me super fast? The answers are (m+5n) (m-n) and (a+4b) (a-3b) I just need to know how to get them cuz my calculations aren't working
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11 votes
11 votes
Can someone help me super fast? The answers are (m+5n) (m-n) and (a+4b) (a-3b) I just need to know how to get them cuz my calculations aren't working

Can someone help me super fast? The answers are (m+5n) (m-n) and (a+4b) (a-3b) I just-example-1
User Dan Hennion
by
3.0k points

1 Answer

23 votes
23 votes

Let's see

#1

  • (m+5n)(m-n)
  • m(m-n)+5n(m-n)
  • m²-mn+5nm-5n²
  • m²+4n-5n²

#2

  • (a+4b)(a-3b)
  • a(a-3b)+4b(a-3b)
  • a²-3ab+4ab-12b²
  • a²+ab-12b²
User Frank Niessink
by
2.7k points
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