Question
What is the nature of the roots of 3x² + 6x – 5 = 0
?Solution
ATQ, To determine the nature of the roots, use the discriminant formula: Δ=b^2− 4ac Given: a=3, b=6, c=−5 Calculate the discriminant: Δ=6^2 −4(3)(−5)=36+60=96 Since Δ >0, the roots are real and distinct. Answer: Option 3. The roots are real and distinct.
If a sum when placed at compound interest grows to Rs.6,400 in 2 yrs and to Rs. 8,000 in 3 yrs, find the rate percent p.a.
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Anoop invested Rs. 'r', while Binny invested Rs. 15,000. After 7 months, Anoop reduced his investment by Rs. 3,000, and Binny red...
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