MCQ
The value of the polynomial 5x - 4x2 + 3, when x = -1 is:
- A6
- B-6
- C1
- D-1
✓
Answer
- -6
Solution:
5x - 4x2 + 3
= -4x2 + 5x + 3
Putting x = -1 in the given polynomial, we get
-4(-1)2 + 5 (-1) + 3
= -4 - 5 + 3
= -9 + 3
= -6
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write the correct answer in the following:
x + 1 is a factor of the polynomial.
x + 1 is a factor of the polynomial.
- x3 + x2 - x + 1
- x3 + x2 + x + 1
- x4 + x3 + x2 + 1
- -x4 + 3x3 + 3x2 + x + 1
In the given figure, O is the centre of a circle and $\angle\text{AOC}=120^\circ.$ Then, $\angle\text{BDC}=?$
→- 60°
- 45°
- 30°
- 15°
If a conical glass is 35cm in diameter and 12cm deep, then its capacity in litres is:
The zeros of the polynomial p(x) = x2 - 3x are:
The altitude of a circular cylinder is increased six times and the base area is decreased one-ninth of its value. The factor by which the lateral surface of the cylinder increases, is:
The class marks of a frequency distribution are as given below: 38, 43, 48, 53, 58. The class corresponding to the class mark 43 is:
The perimeter and area of a triangle whose sides are of lengths 3cm, 4cm and 5cm respectively are:
(x + 1) is a factor of the polynomial:
- x3 + x2 - x + 1
- x3 + 2x2 - x - 2
- x3 + 2x2 - x + 2
- x4 + x3 + x2 + 1
The simplest form of $0.12 \overline{3}$ is
→