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Sum of three numbers in an AP is 15 and sum of squares of its 1st and 3 rd term is 58. Find the numbers

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2 years ago

Susmita
425 Points
```							Let the numbers be(a-r),a,(a+r).So(a-r)+a+(a+r)=15Or,3a=15Or,a=5Also(a-r)2+(a+r)2=58Or,a2-2ar+r2+a2+2ar+r2=58Or,a2+r2=29or,r2=29-52=4or,r=2So the numbers are3,5,7If it helps please approve.
```
2 years ago
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• 101 Video Lectures
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• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions