Expand (i) `(a+2b+5c)^2` (ii) ` (2a+b+c)^2` (iii) ` (a-2b-3c)^2`
Expand
(i) `(a+2b+5c)^2`
(ii) ` (2a+b+c)^2`
(iii) ` (a-2b-3c)^2`
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1 Answers
Correct Answer - (i) `a^2+4b^2+25c^2+4ab+20bc+10ac`
(ii) `4a^2+b^2+c^2-2bc+4ac`
(iii) ` a^2+4b^2+9c^2-4ab+12bc- 6ac`
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