goovinmortin goovinmortin

18-12-2020
Mathematics

contestada

the number of positive resl rootd for the expression for -3x³+8x²-7x+10=0 is less than or equal to

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ChoiSungHyun ChoiSungHyun

18-12-2020

Step-by-step explanation:

By Descartes' Rule of Signs, f(x) = -3x³ + 8x² - 7x + 10 changes sign 3 times, so there are 1 or 3 positive roots.

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