3x³-2x·x²
问题描述:
3x³-2x·x²
a·a²·a³+2a的四次方乘以a²-3a³·a³
(a-b)²·(a-b)³+(a-b)的四次方乘以(-a-b)
(a-b-c)³·(b+c-a)²
a³·a的五次方减去(a³)的五次方
[(a-b)²]³-[(b-a)³]²
2x·x³+(x²)²
³是立方
²是平方
答
3x³-2x·x²
=3x^3-2x^3
=x^3
a·a²·a³+2a的四次方乘以a²-3a³·a³
=a^6+2a^4*a^2-3a^6
=a^6+2a^6-3a^6
=0
(a-b)²·(a-b)³+(a-b)的四次方乘以(-a-b)
=(a-b)^5+(a-b)^4*(-a+b)
=(a-b)^5-(a-b)^5
=0
(a-b-c)³·(b+c-a)²
=(a-b-c)^3·(a-b-c)^2
=(a-b-c)^5
a³·a的五次方减去(a³)的五次方
=a^5*a^3-(a^3)^5
=a^8-a^15
[(a-b)²]³-[(b-a)³]²
=(a-b)^6-(a-b)^6
=0
2x·x³+(x²)²
=2x^4+x^4
=3x^4