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" 6.If "a^(2)+b^(2)+c^(2)=250" and "ab+b...

" 6.If "a^(2)+b^(2)+c^(2)=250" and "ab+bc+ca=3," find "a+b+c

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(i) If a^(2)+b^(2)+c^(2)=20 " and" a+b+c=0, " find " ab+bc+ac . (ii) If a^(2)+b^(2)+c^(2)=250 " and" ab+bc+ca=3, " find" a+b+c . (iii) If a+b+c=11 and ab+bc+ca=25, then find the value of a^(3)+b^(3)+c^(3)-3 abc.

(i) If a^(2)+b^(2)+c^(2)=20 " and" a+b+c=0, " find " ab+bc+ac . (ii) If a^(2)+b^(2)+c^(2)=250 " and" ab+bc+ca=3, " find" a+b+c . (iii) If a+b+c=11 and ab+bc+ca=25, then find the value of a^(3)+b^(3)+c^(3)-3 abc.

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If a^(2)+b^(2)+c^(2)=24 and ab+bc+ca=-4, then find a+b+c

If a^(2)+b^(2)+c^(2)=20 and a+b+c=0, find ab+bc+ca

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If a^(2) + b^(2) + c^(2) = 29 and a + b + c = 9 , find: ab + bc + ca

If a^(2)+b^(2)+c^(2)=20 and a+b+c=0 find ab+bc+ca