CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ]
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CBSE Class 10 Sample Paper for 2022 Boards - Maths Standard [MCQ]
Last updated at Dec. 16, 2024 by Teachoo
Transcript
Question 44 A polynomial q(t) with sum of zeroes as 1 and the product as −6 is modelling Anu’s height in feet above the water at any time t( in seconds). Then q(t) is given by (a) t2 + t + 6 (b) t2 + t − 6 (c) −8t2 + 8t + 48 (d) 8t2 − 8t + 48 The quadratic polynomial is t2 − (Sum of roots)t + Product of roots Putting values 𝑡^2−(1)𝑡+(−6) 𝒕^𝟐−𝒕−𝟔 But, we can multiply any constant to this polynomial, And that polynomial would have the same zeroes Multiplying by −8 q(t) = −8 × (t2 − t − 6) q(t) = −8t2 + 8t + 48 So, the correct answer is (c)
