Question 4 - MCQs from NCERT Exemplar - Chapter 2 Class 10 Polynomials

Last updated at April 16, 2024 by

A quadratic polynomial, whose zeroes are –3 and 4, is

(A)x 2 – x + 12   (B) x 2 + x + 12

(C) x 2 /2 − x/2 − 6  (D) 2x 2 + 2x − 24

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Question 4 A quadratic polynomial, whose zeroes are –3 and 4, is x2 – x + 12 (B) x2 + x + 12 (C) 𝑥^2/2 − 𝑥/2 − 6 (D) 2x2 + 2x − 24 The required quadratic polynomial is (x − (−3)) (x − 4) = (x + 3) (x − 4) = x (x − 4) + 3 (x − 4) = x2 − 4x + 3x − 12 = x2 − x − 12 Dividing by 2 = 1/2 × (x2 − x − 12) = 𝑥^2/2 − 𝑥/2 − 6 So, the correct answer is (C)

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