If the zeroes of the quadratic polynomial ax 2 + bx  + c, a ≠ 0 are equal, then: 

(a) c and a have opposite signs           (b) c and b have opposite signs 

(c) c and a have the same sign           (d) c and b have the same sign

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Transcript

Question 11 If the zeroes of the quadratic polynomial ax2 + bx + c, a ≠ 0 are equal, then: (a) c and a have opposite signs (b) c and b have opposite signs (c) c and a have the same sign (d) c and b have the same sign Since the zeroes are equal D = 0 b2 − 4ac = 0 b2 = 4ac ac = 𝑏^2/4 Since product of ac is positive Both a and c will have the same sign So, the correct answer is (C)

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.