(1)(-x^10)/(-x)^2+(-3x^4)^2
=(-x^10)/x^2+9x^8
=-x^8+9x^8
=8x^8
(2)(x-4/x)*x/(x-2)
=(x^2-4)/(x-2)
=(x+2)(x-2)/(x-2)
=x+2
(1) (-x^10)/(-x)^2+(-3x^4)^2=-x^8+9x^8=8x^8
(2) (x-4/x)*x/(x-2)=(x²-4)/(x-2)=(x+2)(x-2)/(x-2)=x+2
(1)8X^8
(2)X+2