kkarlanic kkarlanic
  • 23-10-2017
  • Mathematics
contestada

Which statement about the following equation is true? 3x^2 - 8x + 5 = 5x^2

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yasinbrown
yasinbrown yasinbrown
  • 23-10-2017
The discriminant (d) of the equation expressed as ax² + bx + c = 0 may be calculated by,
                                      d = b² - 4ac
Simplifying the equation, -2x² - 8x + 5 = 0. Substituting the known values,
                                d = (-8)² - 4(-2)(5) = 104

The answer is letter B. The discriminant is greater than 0, so there are two real roots. 


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