Polynomials | ex-2.1 | maths | cbse board | important class must watch

The width of each of nine classes in a frequency distribution is 2.5 and the lower class boundary of the lowest class 10.6. Then the upper class boundary of the highest class is (a) 35.6 (b) 33.1 (c) 30.6 (d) 28.1

The number of hours television watched in a day by the students of a particular class during holidays is shown in the following histogram: Look at the histogram and answer the following questions: 1. For how many hours the maximum number of students watch TV? 2. How many students watch TV for less than 4 hours? 3. How many students spend more than 5 hours in watching TV?

For a polynomial p (x) , the value of p(3) is −2 . Which of the following must be true about p (x) ?

Express each of the following in the language of ratios: In a class, the number of girls in the merit list of the board examination is two times that of boys. The number of students passing mathematics test is 2/3 of the number that appeared.

Find the zeroes of the following polynomials by factorisation method and verify the relations between the zeroes and the coefficients of the polynomials (i) 4x^(2) - 3x - 1

A polynomial in x of degree 3 vanishes when x=1 and x=-2 , ad has the values 4 and 28 when x=-1 and x=2 , respectively. Then find the value of polynomial when x=0 .

Find the zeroes of the following polynomials by factorisation method and verify the relations between the zeroes and the coefficients of the polynomials (vii) 2s^(2)-(1+2sqrt(2))s+sqrt(2)

What polynomial must be added ot 7x^2 + 14x - 8 to result in a sum of 5x^2 + 18x + 1 ?

What must be added to the polynomial 2x^(3)-3x^(2)-8x , so that it leaves a remainder 10 when divided by 2x +1 ?