Question 2:
Find the roots of the quadratic equations given in Q.1 above by applying the quadratic formula.
Answer:
(iv) 2x2 +x +4 = 0
On comparing this equation with ax2 + bx + c = 0, we obtain
a = 2, b = 1, c = 4
By using quadratic formula, we obtain
However, the square of a number cannot be negative.
Therefore, there is no real root for the given equation.
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