abulayla abulayla

19-07-2017
Mathematics

contestada

Determine the type and number of solutions of -4x^2-3x+7=0
A. One real solution and one imaginary solution
B. Two imaginary solutions
C. Two real solutions
D. One real solution

Respuesta :

Banabanana Banabanana

19-07-2017

-4x² - 3x + 7 = 0
D = b² -4ac = (-3)² - 4*(-4)*7 = 9 + 112 = 121
D>0 ⇒ Two real solutions

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