यदि \(x=\sqrt{7}\), तो \(x^2+4x\) किसके बराबर है?
If \(x=\sqrt{7}\), what is \(x^2+4x\) equal to?
Explanation opens after your attempt
A. \(7+4\sqrt{7}\)
Concept
(x-2=\(\sqrt{7}\)2=7).
Why this answer is correct
\(4x=4\sqrt{7}\), so \(x^2+4x=7+4\sqrt{7}\).
Exam Tip
Simplify the square and the multiplication separately. चरण 1: (x-2=\(\sqrt{7}\)2=7)। चरण 2: \(4x=4\sqrt{7}\), इसलिए \(x^2+4x=7+4\sqrt{7}\)। चरण 3: वर्ग और गुणा को अलग-अलग सरल करें।
Login to save your score, XP, coins and progress.
