Question 32743
Discriminant is b^2-4ac (in ax^2+bx+c=0)
Here, a = 5, b = -7 and c= -4;
Discriminant = 49-4(5)(-4) = 49 + 80 = 129;
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Number of solutions are two because it is a quadratic equation and the discriminant != 0;
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Both solutions are real because the discriminant is positive;