（lg5)2+1g2*1g25+(1g2)2对数运算,求详尽运算过程!

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（lg5)2+1g2*1g25+(1g2)2对数运算,求详尽运算过程!
（lg5)2+1g2*1g25+(1g2)2
对数运算,求详尽运算过程!

（lg5)2+1g2*1g25+(1g2)2对数运算,求详尽运算过程!
（lg5)2+1g2*1g25+(1g2)2
=（lg5)2+1g2*1g5^2+(1g2)2
=（lg5)2+21g2*1g5+(1g2)2
=（lg5+1g2)2
=1

（lg5)^2+1g2*1g25+(1g2)^2
=（lg5)^2+1g2*1g(5)^2+(1g2)^2
=（lg5)^2+21g2*1g5+(1g2)^2
=(lg5+lg2)^2
=(lg10)^2
=1

因为lg25=lg(5^2)=2lg5
所以原式=(lg5)^2+2(lg2)(lg5)+(lg2)^2
=(lg5+lg2)^2
=(lg10)^2
=1

（lg5)2+1g2*1g25+(1g2)2对数运算,求详尽运算过程! 1g2的平方+1g2*1g50+1g25 lg5+lg2*1g5+(1g2)^2 为什么(lg5+lg2)*(lg5-lg2)=lg5-1g2 (1)lg5+1g20= (2)lg200-1g2= 1g25+2/3g8+1g5乘1g20+(1g2)的平方 (1g5)+21g2-(1g2) lg5+21g25+lg8+21g2=?a7.a3.a2+?有机会请你是香港玩 1g2+1g5= 1g2+1g5等于 (1g5)的2平方+21g2-(1g2)的2平方 ( 1g5 )^2+21g2-( 1g2)^2计算此题. 若a=1/3(1g16+log5(25)-1g1/5)-1g0.2,b=(1g2)^2+1g2*1g25+(1g5)^2,则a减b等于( )A -1 B 0 C 1 D 2但为什么? 对数难题设X=(1/2)lg5,Y=(1/5)1g2 A X-Y>0 B X-Y 计算(1g5)2+1g2*1g50=多少? 计算2sin180°-1g5-1g2?有急用 1g5-1g2份之一计算 1g5+1g2等于多少.