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-2 = c -2
Keeping the variable c on one side and integers on one side we take the -2 to the other side making it +2 and then add.
c - 2 = -2
c = -2 + 2 = 0
So c = 0
If a = -15, b = 5 and c = -2 a - b - c = -15 - 5 - (-2) = -20 + 2 = -18
a + c - b = 3 + 2 - 5 = 5 - 5 = 0
b = sqrt32 or 4 root 2
a=-2 4b=-2 --> b=-1/2 c=8 (-2)(-1/2)(8)(3)= 24
it equals 4c