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moldybubblegum11
02.08.2019 •
Mathematics
Which of the following is the complete factorization of 3x2-6x-240?
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Ответ:
2. Use " ^ " to indicate exponentiation
3. Factor x^2 - 2x - 80 using completing the square:
x^2 - 2x + 1^2 - 1^2 - 80
(x+1)^2 - 1 - 80
(x+1)^2 - 81
(x+1)^2 - 9^2 = (x+1-9)(x+1 +9), or (x-8)(x+10)
Final answer, with all factors shown: 3(x-8)(x+10)
Ответ: