Choose the correct answer for the following question.The roots of x2 + kx + k = 0 are real and equal, find k.

Q1 of 87 Page 53

Choose the correct answer for the following question.
The roots of x² + kx + k = 0 are real and equal, find k.

equation has real and equal roots.

∴

⇒

k = 0 or

∴ k = 0 or 4

Choose the correct answer for the following question.

Which one is the quadratic equation?

Choose the correct answer for the following question.

Out of the following equations which one is not a quadratic equation?

Choose the correct answer for the following question.

For find the value of the discriminant.

Choose the correct answer for the following question.

Which of the following quadratic equations has roots 3, 5?

Questions · 87

2. Quadratic Equations

1 2 3 4 5 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 1 2 2 2 3 3 3 4 5 6 7 7 1 2 3 4 5 6 7 8 9 10 1 1 1 1 1 1 1 1 2 3 3 3 4 5 5 5 6 6 6 7 7 7 7 7 7 8 9 10 11 12 13 14 15