Question 6:
Answer
This equation can also be written as 9x2 – 12x + 20 = 0
On comparing this equation with ax2 + bx + c = 0, we obtain
a = 9, b = −12, and c = 20
Therefore, the discriminant of the given equation is
D = b2 – 4ac = (−12)2 – 4 × 9 × 20 = 144 – 720 = −576
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