Question

If x= -3√2, is a solution of the quadratic equation x2+ kx -6 = 0 find the value of k. (a) 3√2 (b) 2√2 (c) -3√2, (d) -2√2​

Answer 1

Step-by-step explanation:

Which of the following is not a quadratic equation

(a) x² + 3x – 5 = 0

(b) x² + x3 + 2 = 0

(c) 3 + x + x² = 0

(d) x² – 9 = 0

Answer/Explanation

2. The quadratic equation has degree

(a) 0

(b) 1

(c) 2

(d) 3

Answer/Explanation

3. The cubic equation has degree

(a) 1

(b) 2

(c) 3

(d) 4

Answer/Explanation

4. A bi-quadratic equation has degree

(a) 1

(b) 2

(c) 3

(d) 4

Answer/Explanation

5. The polynomial equation x (x + 1) + 8 = (x + 2) {x – 2) is

(a) linear equation

(b) quadratic equation

(c) cubic equation

(d) bi-quadratic equation

Answer/Explanation

6. The equation (x – 2)² + 1 = 2x – 3 is a

(a) linear equation

(b) quadratic equation

(c) cubic equation

(d) bi-quadratic equation

Answer/Explanation

7. The roots of the quadratic equation 6x² – x – 2 = 0 are