Question 1. Which of the following expressions are polynomials in one variable and which Chapter 2: Polynomial Maths Class 9 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. Question 1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer. (i) 4x2 – 3x + 7 (ii) y2 + √2 (iii) 3√t + t√ 2 (iv) y +2/y (v) x10 + y3 + t50 is solved by our expert teachers. You can get ncert solutions and notes for class 9 chapter 2 absolutely free. NCERT Solutions for class 9 Maths Chapter 2: Polynomial is very essencial for getting good marks in CBSE Board examinations
Question 1. Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.
(i) 4x2 – 3x + 7 (ii) y2 + √2 (iii) 3√t + t√ 2 (iv) y +2/y (v) x10 + y3 + t50
Solution (i)4x2 – 3x + 7
there is only one variable x with whole number power so this polynomial in one variable
(ii)y2 + √2
there is only one variable y with whole number power so this polynomial in one variable
(iii) 3√t + t√ 2
there is only one variable t but in 3√t power of t is ½ which is not a whole number so 3√t + t√ 2 is not a polynomial
(iv)y +2/y
there is only one variable y but 2/y = 2y-1 so the power is not a whole number so y +2/y is not a polynomial
(v) x10 + y3 + t50
there are three variable x y and t and there powers are whole number so this polynomial in three variable
Copyright @ ncerthelp.com A free educational website for CBSE, ICSE and UP board.