व्यंजक \(6a^2-4a+9-2a^2+7a-5\) का सरल रूप क्या है?
What is the simplified form of \(6a^2-4a+9-2a^2+7a-5\)?
Explanation opens after your attempt
B. \(4a^2+3a+4\)
Concept
Combining like terms gives \(6a^2-2a^2=4a^2\), (-4a+7a=3a), and (9-5=4). Group terms by powers.
Why this answer is correct
The correct answer is B. \(4a^2+3a+4\). Combining like terms gives \(6a^2-2a^2=4a^2\), (-4a+7a=3a), and (9-5=4). Group terms by powers.
Exam Tip
समान पद जोड़ने पर \(6a^2-2a^2=4a^2\), (-4a+7a=3a), और (9-5=4) मिलता है। घात के अनुसार पद समूहित करें।
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