x的立方.x的5次方.x+(x的立:

Question

x的立方*x的5次方+x*x的立方*x的4次方 x的4次方*x
x的立方*x的5次方+x*x的立方*x的4次方
x的4次方*x的5次方(-x)^7+5(x^4)的4次方-(x^8)^2
2(x^3)^2*x^3-(3x^3)^3+(5x)^2*x的7次方

Answer 1

x的立方*x的5次方+x*x的立方*x的4次方
= x^8+x^8
=2*x^8
x的4次方*x的5次方(-x)^7+5(x^4)的4次方-(x^8)^2
= -x^16 +5x^16 - x^16
=3x^16
2(x^3)^2*x^3-(3x^3)^3+(5x)^2*x的7次方
= 2x^9 - 27x^9 + 25x^9
=0