The best ncert question from class 10th of quadratic equation of exercise 4.4. How i solve this question is easy and the simple way it is very important for class 10th
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Find the nature of the roots of the following quadratic equations. If the real roots exist, find them; (i) 2×2 – 3x + 5 = 0
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Given,
2x2 – 3x + 5 = 0
Comparing the equation with ax2 + bx + c = 0, we get
a = 2, b = -3 and c = 5
We know, Discriminant = b2 – 4ac
= ( – 3)2 – 4 (2) (5) = 9 – 40
= – 31
As you can see, b2 – 4ac < 0
Therefore, no real root is possible for the given equation, 2x2 – 3x + 5 = 0.