Without actually calculating, find the value of (25)^3-(73)^3+(50)^3
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Without actually calculating much, find the value of
(25)^3 - (75)^3 + (50)^3 ?
a little factoring will help...
(25)^3 - (3)^3 (25)^3 + (2)^3 (25)^3 = (25)^3[1 - (3)^3 + (2)^3] = (25)^3[1 - 27 + 8] =
(25)^3 [- 18]
now, you have to calculate !
get involved !
id est
[- 281250]
hope it helps u
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