(9) में से (t) के वर्ग और (2t) के योग को घटाने का सही व्यंजक कौन सा है?
Which expression represents subtracting the sum of the square of (t) and (2t) from (9)?
Explanation opens after your attempt
C. (9-\(t^2+2t\))
Concept
The whole sum being subtracted is \(t^2+2t\). So it is written in brackets as (9-\(t^2+2t\)).
Why this answer is correct
The correct answer is C. (9-\(t^2+2t\)). The whole sum being subtracted is \(t^2+2t\). So it is written in brackets as (9-\(t^2+2t\)).
Exam Tip
घटाया जाने वाला पूरा योग \(t^2+2t\) है। इसलिए उसे कोष्ठक में रखकर (9-\(t^2+2t\)) लिखते हैं।
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