find a^2+b^2+c^2 if a+b+c =17 and ab+bc+ca =30
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we have to substitute given values in(a+b+c)^2=a^2+b^2+c^2+2(ab+bc+ca)
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jasstoor:
plz help in other question also
that is(2x-1/3x)^3
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