Question

2. The discriminant of the equation 25x2 - 5x - 11 = 0 is -63.
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Answer 1

Answer:

0.77082 or -670.72

Step-by-step explanation:

25x² - 5x - 11 ≥ 0

a = 25

b = -5

c = -11

b² - 4ac ≤ 0

(-5)² - 4 × 25 × (-11)

25 - 100 × (-11)

25 + 1100

1125 > 0

x = -b ± √(b²- 4ac) / 2a

x = -(-5) ± √1125 / 2 × 25

x = 5 + 33.541 / 50

x = 0.77082

or

x = -670.72