Izaiya0623 Izaiya0623

09-03-2020
Mathematics

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Six times the square of a number x plus 11 times the number equals 2. What are possible values of x?

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Danboghiu66 Danboghiu66

09-03-2020

Answer:

-2, 1/6

Step-by-step explanation:

6x²+11x=2

6x²+11x-2=0

Delta=11²-4×6×(-2)=121+48=169

x1,2=(-11 +- sqrt(169))/(2×6)=

(-11 +- 13)/12

x1=(-11+13)/12=2/12=1/6

x2=(-11-13)/12=-24/12=-2

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