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If 4x2 – 6x + m is divisible by x – 3, which one of the following is the greatest divisor of m ?(a) 9 (b) 12 (c) 18 (d) 36 |
Answer» (c) 18 If f(x) = 4x2 – 6x + m is divisible by (x – 3), then f(3) = 0 ⇒ 4 (3)2 – 6.3 + m = 0 ⇒ 36 – 18 + m = 0 ⇒ m = –18. The greatest divisor of m = 18. |
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