यदि \(x=\sqrt{5}\), तो \(x^2+3x\) किसके बराबर है?
If \(x=\sqrt{5}\), what is \(x^2+3x\) equal to?
Explanation opens after your attempt
A. \(5+3\sqrt{5}\)
Concept
(x-2=\(\sqrt{5}\)2=5).
Why this answer is correct
\(3x=3\sqrt{5}\), so \(x^2+3x=5+3\sqrt{5}\).
Exam Tip
Simplify the square and the multiplication separately. चरण 1: (x-2=\(\sqrt{5}\)2=5)। चरण 2: \(3x=3\sqrt{5}\), इसलिए \(x^2+3x=5+3\sqrt{5}\)। चरण 3: वर्ग और गुणा को अलग-अलग सरल करें।
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