(1g5)+21g2-(1g2)
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(1g5)+21g2-(1g2)
(1g5)+21g2-(1g2)
(1g5)+21g2-(1g2)
(lg5+lg2)(lg5-lg2)+2lg2=lg5+lg2=1
(1g5)+21g2-(1g2)
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.
lg5+lg2*1g5+(1g2)^2
1g5-1g2份之一 计算
1g5+1g2等于多少.
化简求值 (1g2)^3+(1g5)^3+3*1g2*1g5
(1g2)^3+(1g5)^3+31g2*1g5=?
(1g2)的二次方+1g20乘以1g5
计算(1g5)2+1g2*1g50=多少?
计算2sin180°-1g5-1g2?有急用
对数计算(1g2)²+1g5·lg20
1g500+1g8/5-1/21g64+50(1g2+1g5)的平方
1g5^2+1g8^(2/3)+1g5·1g20+(1g2)^2=
解(1g2)^3+(1g5)^3+1g5*1g8
已知a+b=(1g2)^3+(1g2)^5+31g2*1g5,求3ab+a^3+b^3的值