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X=-3
-3³-{3(-3)}²+2
-27-{-9}²+2
-27+81+2
54+2
56
B)X+2=0
x=-2
(-2)⁴-(6(-2))³+(3(-2))²-1
16-(-12)³+(-6)²₋1
16-(-1728)+36-1
1744+36-1
1780-1
1779
c) x-2=0
x=2
{3(2)}³ - 2+5
{6}³-2+5
216-2+5
214+5
219