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x3 – 6x2 + 24 = 6(x – 3), then find the value of x2 + {6/(x – 6)}


1. 3
2. 4
3. 6
4. 5

1 Answer

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Correct Answer - Option 3 : 6

Given:

x3 – 6x2 + 24 = 6(x – 3)

Calculation:

x3 – 6x2 + 24 = 6x – 18

⇒ x3 – 6x2 = – 42 + 6x

x2 + {6/(x – 6)}

⇒ {(x3 – 6x2 + 6)/(x – 6)}

⇒ (– 42 + 6x + 6)/(x – 6)

⇒ (6x – 36)/(x – 6)

⇒ 6(x – 6)/(x – 6)

⇒ 6

∴ The value is 6

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