skittlesrodriqu01 skittlesrodriqu01

15-09-2016
Mathematics

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Which is the completely factored form of 3x2 – 12x – 15?

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dalendrk dalendrk

15-09-2016

[tex]3x^2-12x-15=3(x^2-4x-5)=3(x^2-5x+x-5)\\\\=3[x(x-5)+1(x-5)]=3(x-5)(x+1)[/tex]

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ajmanzo ajmanzo

09-02-2021

Answer: b. 3(x + 1)(x – 5)

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