(25^2+5^11)/30=? (-2)^2001+(-2)^2002-2^2001=?

来源:百度知道 编辑:UC知道 时间:2024/05/16 11:58:30
用分解因式的方法计算

你好!

(1):
解,原式=(5^4+5^11)/(5*6) = [5^3(1+5^7)]/6 = 125*78126/6 = 1627625

(2) :
解:原式=(-2)^2001 * (1-2+1) = (-2)^2001*0 = 0

^_^

1.
(25^2+5^11)/30
=(5^4+5^11)/30
=5^4(1+5^7)/30
=5^4(1+5^7)/(5*6)
=5^3(1+5^7)/6
=5^3(1+5^7)/6
=125*(1+78125)/6
=125*(1+78125)/6
=9765750/6
=1627625

2.
(-2)^2001+(-2)^2002-2^2001
=-2^2001+2^2002-2^2001
=-2^2001(1-2^1+1)
=-2^2001(1-2+1)
=0

(25^2+5^11)/30

=(25^2+25^2*5^7)/(5*6)

=5^4(1+5^7)/(5*6)

=5^3(1+5^7)/6

=125*78126/6

=1627625

(-2)^2001+(-2)^2002-2^2001

=-2^2001+2^2002-2^2001

=-2^2001*(1-2+1)

=-2^2001*0

=0

第一题:(25^2+5^11)/30=[(5^2)^2+5^11]/30
=(5^4+5^11)/30
=5^4(1+5^7) /30
=5^4*78126/30=1627625

第二题:(-2)^2001+(