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Question
Find the discriminant of the following equation:
`2x^2 - 5sqrt(2)x + 4 = 0`
Sum
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Solution
Here,
a = 2
b = `-5sqrt2`
c = 4
Discriminant D is given by:
D = b2 – 4ac
= `(-5sqrt(2))^2 - 4 xx 2 xx 4`
= (25 × 2) – 32
= 50 – 32
= 18
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Chapter 4: Quadratic Equations - EXERCISE 4B [Page 193]
