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OpenStudy (anonymous):
let a,b,c be any real no..supoose that there are real numbers X,Y,Z not all zero such that X=CY + BZ, Y=az+cz and Z=bX + ay ,then Asq.+Bsq.+Csq.+2ABC is equal to....
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OpenStudy (anonymous):
y = az + cz? hmm shouldn't there be an x term.
OpenStudy (anonymous):
maybe
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