यदि (x=-2) हो, तो \(x^4+2x^3-3x^2+5\) का मान क्या होगा?
If (x=-2), what is the value of \(x^4+2x^3-3x^2+5\)?
Explanation opens after your attempt
B. (-7)
Concept
Substitution gives (16+2(-8)-3(4)+5=-7). Even and odd powers of a negative number affect signs differently.
Why this answer is correct
The correct answer is B. (-7). Substitution gives (16+2(-8)-3(4)+5=-7). Even and odd powers of a negative number affect signs differently.
Exam Tip
मान रखने पर (16+2(-8)-3(4)+5=-7) मिलता है। ऋणात्मक संख्या की सम और विषम घात अलग असर देती हैं।
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