3x^4 + 24x^3 + 84x^2 +144x +98=9898-98=03x^4 + 24x^3 + 84x^2 +144x=03x(x^3+ 8x^2 +28+48)3x(x+4) (x^2 +4x+12)=0x=0 x+4=0 = x= 0- 4 = x= -4i TRIED ANOTHER way :)
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