यदि (p(x)=2x+a) और (q(x)=4x-a), तो (p(x)-q(x)) क्या है?
If (p(x)=2x+a) and (q(x)=4x-a), what is (p(x)-q(x))?
Explanation opens after your attempt
B. (-2x+2a)
Concept
(2x+a-(4x-a)=-2x+2a). Change the signs inside the bracket while subtracting.
Why this answer is correct
The correct answer is B. (-2x+2a). (2x+a-(4x-a)=-2x+2a). Change the signs inside the bracket while subtracting.
Exam Tip
(2x+a-(4x-a)=-2x+2a) है। घटाते समय कोष्ठक के चिन्ह बदलें।
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