Find the value of
a. 5³ - 4³
b. 11³ - 10³
c. 13³ - 12³
Devthegreat:
1- 5*5*5-4*4*4=(5-4)(5*5+4*4+5*4)=1(25+16+20)=61
2-11*11*11-10*10*10=(11-10)(11*11+10*10+11*10)=(121+100+110)=331
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(1) 5³-4³ = 125-64 = 61
(2) 11³-10³ = 1331-1000 = 331
(3) 13³-12³ = 2197 - 1728 = 469
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