1.

If 2 is a zero of the polynomial p(x) = 2x2 – 3x + 7a, find the value of a.

Answer»

Given that 2 is a zero of p(x) = 2x2 – 3x + 7a 

(i.e.) p(2) = 0 

⇒ 2(2)2 – 3(2) + 7a = 0 

⇒ 8 – 6 + 7a = 0 

⇒ 2 + 7a = 0 

⇒ 7a = – 2

⇒ a = -2/7



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