17. Solve If a+b+c=9 and ab + bc + ca = 26, find a + b + c

1.	17. Solve If a+b+c=9 and ab + bc + ca = 26, find a + b + c
Answer» <html><body><p>Given, a+<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>+c=9 and ab+bc+ca=26.We <a href="https://interviewquestions.tuteehub.com/tag/know-534065" style="font-weight:bold;" target="_blank" title="Click to know more about KNOW">KNOW</a>, (a+b+c) 2 =a 2 +b 2 +c 2 +2ab+2bc+2ca⇒(a+b+c) 2 =a 2 +b 2 +c 2 +2(ab+bc+ca).Putting the <a href="https://interviewquestions.tuteehub.com/tag/values-25920" style="font-weight:bold;" target="_blank" title="Click to know more about VALUES">VALUES</a> here, we get,(9) 2 =a 2 +b 2 +c 2 +2(26)⇒81=a 2 +b 2 +c 2 +52⇒a 2 +b 2 +c 2 =81−52=29.Step-by-step explanation:hope it is useful.please <a href="https://interviewquestions.tuteehub.com/tag/make-546668" style="font-weight:bold;" target="_blank" title="Click to know more about MAKE">MAKE</a> me brainliest</p></body></html>

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