21)Determine the nature of the roots for the following quadratic equations \(15x^2 + 11x + 2 = 0\)
Answer: \(15x^2 + 11x + 2 = 0\) comparing with \(ax^2 + bx + c = 0\).
Here a = 15, b = 11, c = 2.
Discriminant \(\Delta = b^2 - 4ac\)
\(= 11^2 - 4(15)(2)\)
\(= 121 - 120\)
\(= 1 > 0\)
∴ The roots are real and unequal.