C-05-Q164mediumsingle_mcq
A real-life problem leading to a quadratic with one negative root and one positive root: the negative root is rejected because—
A real-life problem leading to a quadratic with one negative root and one positive root: the negative root is rejected because—
- athe equation is wrong
- bquantities like length, age, number cannot be negative
- cquadratics cannot have negative roots
- darbitrary
ব্যাখ্যা
In word problems the unknown represents a physical quantity such as length, age, or count, which cannot be negative. The negative root is therefore mathematically valid but inadmissible in context, so it is rejected.