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Mathematics 4 Online
OpenStudy (anonymous):

HELP ASAP PLEASE calculate the discriminant of the function shown y = 0.05 x^2 - x + 1

OpenStudy (anonymous):

ok the discriminant of a quadratic expression ax^2 +bx + c is given by sqrt(b^2 - 4ac)

OpenStudy (anonymous):

here b is -1, a is .05 and c is 1

OpenStudy (anonymous):

so we need to plug in the values in that formula

OpenStudy (anonymous):

so we have sqrt ((-1)^2 - 4 (.05)(1))

OpenStudy (anonymous):

sqrt(1 - .2)

OpenStudy (anonymous):

sqrt (.8)

OpenStudy (anonymous):

was that ok?

OpenStudy (anonymous):

yes thank you, how would the answer be written though

OpenStudy (anonymous):

well we calculate the sqrt value which would obviously be a positive number

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

the sqrt value would be ur answer i guess

OpenStudy (anonymous):

so it would be 2

OpenStudy (anonymous):

no...its sqrt(.8) that is 0.8944

OpenStudy (anonymous):

ok also what methods could be used to solve that problem

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