Question 3 A quadratic polynomial, the product and sum of whose zeroes are 5 and 8 respectively is (a) 𝑘[𝑥^2−8𝑥+5] (b) 𝑘[𝑥^2+8𝑥+5] (c) 𝑘[𝑥^2−5𝑥+8] (d) 𝑘[𝑥^2+5𝑥+8]
The quadratic polynomial is
x2 − (Sum of roots)x + Product of roots
We can multiply any constant to this polynomial
So, required quadratic polynomial is
𝒌(𝒙^𝟐−𝟓𝒙+𝟖" " )
So, the correct answer is (c)
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.
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