Quadratic Equations

Quadratic Equations Here are the MCQ's from Quadratic Equations chpter 4 book 1 Mathematics. Read questions carefully

1. An equation of the form ax2 + bx + c = 0 is called

A) Quadratic B) Cubic C) Bi-Quadratic D) Linear

2. In the quadratic equation ax2 + bx – c = 0 the sum of roots is

A) -b/c B) -b/a C) -c/a D) a/c

3. In the quadratic equation ax2 – bx + c = 0 the product of roots is

A) c/a B) b/a C) a/c D) -c/a

4. The sum of cube roots of unity is

A) 3 B) 2 C) 1 D) 0

5. If one root of quadratic equation is 4 + 5i, then equation

A) x2 – 8x + 41 = 0 B) x2 + 8x + 41 = 0 C) x2 – 41x + 8 = 0 D) x2 – 41x – 8 = 0

6. The product of cube root of unity is

A) 2 B) 3 C) 1 D) 0

7. The number of real roots in cube of unity are

A) 3 B) 2 C) 1 D) 0

8. If 3l + x + 5.3x – 8 = 0, then x =

A) 8 B) 5 C) 3 D) 0

9. The sum of roots of 3x2 – 4x + 7 = 0 is

A) 4/3 B) 7/3 C) -7/3 D) -4/3

10. The product of roots of 3x2 + 5x – 2 = 0 is

A) 5/3 B) 3/5 C) -2/5 D) -2/3