A) 350
B) 785
C) 1220
D) 1320
Correct Answer: C
Solution :
\[\frac{785\times 785\times 785+435\times 435\times 435}{{{(785)}^{2}}+{{(435)}^{2}}-(785)(435)}\] \[=\frac{{{(785)}^{3}}+{{(435)}^{3}}}{{{(785)}^{2}}+{{(435)}^{2}}-(785)(435)}\] \[=\frac{(785+435)[{{(785)}^{2}}+{{(435)}^{2}}-(785)(435)]}{{{(785)}^{2}}+{{(435)}^{2}}-(785)(435)}\]\[=785+435=1220\]You need to login to perform this action.
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