3. दो क्रमागत प्राकृत संख्याओं के वर्गों का योग 85है, संख्याएँ ज्ञात कीजिए।
।
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0
Answer:
हल -
दो क्रमागत प्राकृत संख्याएँ x, (x+1) हैं
तब,
\begin{gathered}{x}^{2} + (x + 1) {}^{2} = 313 \\ \\ {x}^{2} + {x}^{2} + 2x + 1 - 313 = 0 \\ \\ {2x}^{2} + 2x - 312 = 0 \\ \\ {x}^{2} + x - 156 = 0\end{gathered}
x
2
+(x+1)
2
=313
x
2
+x
2
+2x+1−313=0
2x
2
+2x−312=0
x
2
+x−156=0
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