Class 9th ganita Manjari ch2 introduction of linear polynomials new NCERT 📚 END OF EXERCISE QUE 1TO6

Class 9th ganita Manjari ch2 introduction of linear polynomials new NCERT 📚 END OF EXERCISE QUE 1TO6
*END-OF-CHAPTER EXERCISES*

*1.* Write a polynomial of degree 3 in the variable $x$, in which the coefficient of the $x^2$ term is $-7$.

*2.* Find the values of the following polynomials at the indicated values of the variables.
    (i) $5x^2 - 3x + 7$ if $x = 1$
    (ii) $4t^3 - t^2 + 6$ if $t = a$

*3.* If we multiply a number by $\frac{5}{2}$ and add $\frac{2}{3}$ to the product, we get $\frac{-7}{12}$. Find the number.

*4.* A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the numbers?

*5.* If you have ₹800 and you save ₹250 every month, find the amount you have after (i) 6 months (ii) 2 years. Express this as a linear pattern.

*6.* The digits of a two-digit number differ by 3. If the digits are interchanged, and the resulting number is added to the original number, we get 143. Find both the numbers.

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