Given, 3 is a zero of p(x).⇒ p(3) = 0∴ 3(3)3 — (3)2 — a(3) — 45 = 0∴ 81 – 9 – 3a – 45 = 0∴ 3a = 27∴ a = 9

Q. 35.0( 2 Votes )

3 is a zero of p(

Answer :

Given, 3 is a zero of p(x).

⇒ p(3) = 0

∴ 3(3)³ — (3)² — a(3) — 45 = 0

∴ 81 – 9 – 3a – 45 = 0

∴ 3a = 27

∴ a = 9

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