help plzz
@ganeshie8 hey havent been here in a while can you help
@phi
any idea what they mean by "cube" -5 ?
-5^3 i think
yes, but I would write it (-5)^3 just to make sure we know we want -5* -5 * -5 (and not - 5*5*5 which gives the right answer, but sometimes it won't)
subtract that expression from -8 to do that, I pick a simpler problem subtract 1 from 3 can you do that ?
2
yes, but how did you get 2 ?
ohh is it -2
you did it correctly the first time. but I want you to write down how you found 2 for the answer to subtract 1 from 3
|dw:1440532728101:dw|
take away 1 from 3 ? how do you do that ?
yu subtract
yes, but write down how to do it take away 1 from 3
subtract 1 from 3 or take away 1 from 3 means do 3-1
the point is to get clear what they mean by subtract that expression from -8 that means -8 - expression where expression is (-5)^3 -8 - (-5)^3
117
-8 - (-5*-5*-5) -5*-5 is 25. 25*-5= -125 -8 - -125 = -8 + 125 = 117 yes
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