saturnpreshine saturnpreshine

17-04-2022
Mathematics

contestada

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 m5n mn and a4b a3b I just need to know how to get them cuz my calculations arent working class=

Respuesta :

Аноним Аноним

17-04-2022

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

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