document.write( "Question 77434: (1) If a,b,c are real numbers uch that a^2+2b=6, b^2+4c=-7, c^2+6a=-13, then the value of a^2+b^2+c^2 is equal to:
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Algebra.Com's Answer #55541 by Edwin McCravy(20056)\"\" \"About 
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If a,b,c are real numbers uch that a^2+2b=6, b^2+4c=-7, c^2+6a=-13, then the value of a^2+b^2+c^2 is equal to:
\n" ); document.write( "(A) 14 (B) 21 (C) 28 (D) 35\r
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