maddieeexox
20. (n2 – 3n + 1) – (4n2 + n – 5)
3n2 – 4n + 6
–3n2 – 4n + 6
–3n2 + 4n – 6
3n2 + 4n – 6



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abdul_shabeer
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First open the brackets

maddieeexox
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what?

abdul_shabeer
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(x+yz)=xy+z

maddieeexox
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i dont understand