(4r(r-1)-3r(2-r)) को सरल करने पर क्या मिलेगा?
What is obtained after simplifying (4r(r-1)-3r(2-r))?
Explanation opens after your attempt
A. \(7r^2-10r\)
Concept
(4r(r-1)=4r-2-4r) and (-3r(2-r)=-6r+3r-2). The total is \(7r^2-10r\).
Why this answer is correct
The correct answer is A. \(7r^2-10r\). (4r(r-1)=4r-2-4r) and (-3r(2-r)=-6r+3r-2). The total is \(7r^2-10r\).
Exam Tip
(4r(r-1)=4r-2-4r) और (-3r(2-r)=-6r+3r-2) है। कुल \(7r^2-10r\) है।
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