यदि (f(x)=x-2+ax) और (g(x)=bx+1) हों तथा ((f-g)(x)=x-2-5x-1), तो ((a,b)) क्या है?

If (f(x)=x-2+ax) and (g(x)=bx+1), and ((f-g)(x)=x-2-5x-1), what is ((a,b))?

Explanation opens after your attempt
Correct Answer

A. ((a,b)=(2,7))

Step 1

Concept

((f-g)(x)=x-2+(a-b)x-1), so (a-b=-5). Among the options, only ((2,7)) works.

Step 2

Why this answer is correct

The correct answer is A. ((a,b)=(2,7)). ((f-g)(x)=x-2+(a-b)x-1), so (a-b=-5). Among the options, only ((2,7)) works.

Step 3

Exam Tip

((f-g)(x)=x-2+(a-b)x-1), इसलिए (a-b=-5)। दिए विकल्पों में केवल ((2,7)) सही है।

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यदि (f(x)=x-2+ax) और (g(x)=bx+1) हों तथा ((f-g)(x)=x-2-5x-1), तो ((a,b)) क्या है? / If (f(x)=x-2+ax) and (g(x)=bx+1), and ((f-g)(x)=x-2-5x-1), what is ((a,b))?

Correct Answer: A. ((a,b)=(2,7)). Explanation: ((f-g)(x)=x-2+(a-b)x-1), इसलिए (a-b=-5)। दिए विकल्पों में केवल ((2,7)) सही है। / ((f-g)(x)=x-2+(a-b)x-1), so (a-b=-5). Among the options, only ((2,7)) works.

Which concept should I revise for this Mathematics MCQ?

((f-g)(x)=x-2+(a-b)x-1), so (a-b=-5). Among the options, only ((2,7)) works.

What exam hint can help solve this Mathematics question?

((f-g)(x)=x-2+(a-b)x-1), इसलिए (a-b=-5)। दिए विकल्पों में केवल ((2,7)) सही है।