Question

已知X的5M次方等于10,求代数式（-2X的2M）的5次方减去1000分之一（X的4次方）5M次方加10的值要过程求

Answer 1

x^(5m)=10

[-2x^(2m)]^5-(x^4)^(5m)/1000+10

=(-2)^5*x^(10m)-x^(20m)/1000+10

=-2^5*[(x^(5m)]^2-[x^(5m)]^4/1000+10

=-32*10^2-10^4/1000+10

=-3200-10+10

=-3200