tangia
08.10.2019 •
Mathematics
Simplify. (x−5)(x^2−2x−6)
also explain how you got your answer. -
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Ответ:
=x3−7x2+4x+30
Step-by-step explanation:
(x−5)(x2−2x−6)
=(x+−5)(x2+−2x+−6)
=(x)(x2)+(x)(−2x)+(x)(−6)+(−5)(x2)+(−5)(−2x)+(−5)(−6)
=x3−2x2−6x−5x2+10x+30
=x3−7x2+4x+30
Ответ: