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JEE Previous Year Question

$If x = - 5 + 2 - 4, then the value of the expression x^{4} + 9 x^{3} + 35 x^{2} - x + 4 is A .Find - A .$

Topic: JEE PYQ

Answer: 160. Full step-by-step solution below.

Correct answer: 160

Solution

(160) Now x + 5 = 4 i \Rightarrow x^{2} + 10 x + 25 = - 16 = (x^{2} + 10 x + 41) (x^{2} - x + 4) - 160 = - 160 = A - A = 160

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