JamesE16
JamesE16
12-07-2017
Mathematics
contestada
-3a^2-b^3+3c^2-2b^3 if a=2 b=-1 c =3
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texaschic101
texaschic101
12-07-2017
-3a^2 - b^3 + 3c^2 - 2b^3......when a = 2, b = -1, and c = 3
-3(2^2) - (-1^3) + 3(3^2) - 2(-1^3) =
-3(4) -(-1) + 3(9) -2(-1) =
-12 + 1 + 27 + 2 =
-12 + 30 =
18 <==
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fxhmstysy
fxhmstysy
12-07-2017
3(4)-(-1)^3+3(9)-2(-1)^3=
-12+1+27+2=18
(-1)^3 is -1, and if there is a minus sign before it, the term will be positive.
Answer Link
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