expand : (5b - 7c)^3
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(5b - 7c) ³
[ (a - b)³= a³ - b ³ + 3 ab ( a - b) ]
(5b) ³ + ( - 7 c )³ + 3 × 5 b × - 7 c ( 5b -7c )
125b³ - 343c ³ - 105 bc ( 5b - 7 c)
AAGE KA ANSWER AAPKO TB PTA CHLEGA JB AAP MUJJHE AS BRAINLIST MARK KROGE
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