यदि (p(x)=(k+2)x-20) का शून्यक (4) है, तो (k) क्या है?
If the zero of (p(x)=(k+2)x-20) is (4), what is (k)?
Explanation opens after your attempt
C. (3)
Concept
From (4(k+2)-20=0), we get (k=3). Substitute the zero into the polynomial and set it to (0).
Why this answer is correct
The correct answer is C. (3). From (4(k+2)-20=0), we get (k=3). Substitute the zero into the polynomial and set it to (0).
Exam Tip
(4(k+2)-20=0) से (k=3) मिलता है। शून्यक को बहुपद में रखकर (0) करें।
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