If the polynomial x3 + 2x2 - ax - 12 is divided by (x - 4) the remain

1.	If the polynomial x3 + 2x2 - ax - 12 is divided by (x - 4) the remainder is 52. Find the value of 'a'.(1) 11 /2 (2) −5 (3) 8 (4) −8
Answer» (3) 8 52 = (4)³ + 2(4)² - 4α - 12 ⇒ 52 = 64 + 32 - 4α - 12 ⇒ 4α = 84 - 52 ⇒ α = 32/4 = 8

If the polynomial x3 + 2x2 - ax - 12 is divided by (x - 4) the remainder is 52. Find the value of 'a'.(1) 11 /2 (2) −5 (3) 8 (4) −8

Answer»

(3) 8

52 = (4)³ + 2(4)² - 4α - 12

⇒ 52 = 64 + 32 - 4α - 12

⇒ 4α = 84 - 52

⇒ α = 32/4 = 8

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If the polynomial x3 + 2x2 - ax - 12 is divided by (x - 4) the remainder is 52. Find the value of 'a'.(1) 11 /2 (2) −5 (3) 8 (4) −8

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