X3 -( x-3)( x2+3x+9) =18x
x3-x3+27=18x
27=18x
x=27:18
x=1.5
2)(x+4)(16-4x+x2)-x(x2+8)= -192
x3+64-x3-8x= -192
64-8x= -192
-8x= -192-64
-8x= -256
X= -256 : (-8)
X= 32
X3 -( x-3)( x2+3x+9) =18x
x3-x3+27=18x
27=18x
x=27:18
x=1.5
2)(x+4)(16-4x+x2)-x(x2+8)= -192
x3+64-x3-8x= -192
64-8x= -192
-8x= -192-64
-8x= -256
X= -256 : (-8)
X= 32