Question
Simplify : `(789 xx 789 xx 789 + 211 xx 211 xx 211)/(789 xx 789 - 780 xx 211 + 211 xx 211)` = ?
Answer: Option C
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Given Exp. = `((789)^3 + (211)^3)/((789)^2 - (789 xx 211) + (211)^2)`
=` ((a^3 + b^3))/((a^2 - ab + b^2))` , where a = 789 and b = 211.
= (a + b) = (789 + 211) = 1000.
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