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If x + 1 = 5 , then the value of x4 + 3x3 + 5x2 + 3x + 1 x x4 + 1
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43 23 -
47 21 -
41 23 -
45 21
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Correct Option: A
Using Rule1 and 8,
| ⇒ x + | = 5 | |
| x |
On squaring both sides,
| ⇒ x2 + | + 2 = 25 | |
| x2 |
| ⇒ x2 + | = 25 - 2 = 23 ...(i) | |
| x2 |
Expression
| = | ||
| x4 + 1 |
| = | ||
| x4 + 1 |
| = | = | |||
| 23 | 23 |
