lg50等于多少

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lg25+lg2*lg50+lg4

lg25+lg2*lg50+lg4=lg25+lg4+lg2*lg50=lg100+lg2*lg50=2+lg2*(lg25+lg2)=2+2lg2*(2lg5+lg2)=2+2lg2*(2-lg2)

lg25+lg2*lg50等于多少?求解~

lg25=2lg5lg50=lg2+lg25=lg2+2lg5原式=2lg5+lg2*(lg5+1)=lg2*lg5+lg2+2lg5=1+lg5+lg2*lg5

(lg5)的平方+lg2*lg50=多少?

lg5*lg5+lg2*lg50=lg5*lg5+lg2*(lg5+lg10)=lg5*(lg5+lg2)+lg2*lg10=lg5*lg10+lg2*lg10=lg10*(lg2+lg5)=lg10

(lg5)的平方加上lg2乘以lg50=多少

(lg5)^2+lg2×lg50=(lg5)^2+lg2×[lg2+lg(5^2)]=(lg5)^2+(lg2)^2+2×lg5×lg2=(lg5+lg2)=lg(5×2)=1

2(lg5)的平方+lg4乘于lg50的值等于

=2lg²5+2lg2*(1+lg5)=2lg²5+2(1-lg5)(1+lg5)=2lg²5+2-2lg²5=2

lg2+lg2.lg50+lg25

lg2+lg2=2lg2,lg50+lg25=(lg5*10)+lg5*5=lg5+1+2lg5=1+3lg5

(lg50)^2+lg2*lg50^2+(lg2)^2

(lg50)^2+lg2*lg50^2+(lg2)^2=(lg50)^2+2lg2*lg50+(lg2)^2=(lg50+lg2)^2=(lg100)^2=2^2=4

计算:lg^25+lg2*lg50

=(lg5)²+lg2(lg5+lg10)=(lg5)²+lg2lg5+lg2×1=lg5(lg5+lg2)+lg2=lg5+lg2=1

对数函数乘法 lg2.lg50

可以化lg2乘(lg10+1g5)=(1+lg5)乘lg2好象就这样了就是它化不了了你可以用计算器核对一下绝对不等于2

(lg2)^2+lg2×lg50+lg25

(lg2)²+lg2lg50+lg25=(lg2)²+lg2×lg(5²×2)+lg5²=(lg2)²+lg2(2lg5+lg2)+2lg5=(lg2

lg²5+lg2·lg50等于多少

lg²5+lg2·lg50=lg²5+lg2·(lg2+lg25)=lg²5+lg²2+2lg5lg2=(lg5+lg2)²=1

(lg5)^2 + (lg2)*(lg50)=

(lg5)^2+(lg2)*(lg50)=(lg5)^2+(lg2)*(lg2*25)=(lg5)^2+(lg2)*(lg2+lg5^2)=(lg5)^2+2lg2lg5+(lg2)^2=(lg5+l

(lg5)^2+lg2*lg50 求值

=(lg5)^2+lg2*(lg5+1)=(lg5)^2+(1-lg5)(1+lg5)=(lg5)^2+1-(lg5)^2=1

化简 (lg5)^2+(lg2)lg50

(lg5)^2+(lg2)lg50=(lg5)^2+(lg2)lg5*10=(lg5)^2+(1-lg5)(lg5+1)=(lg5)^2+[1-(lg5)^2]=1

(lg2)的2次方+lg2×lg5+lg50等于多少

(lg2)的2次方+lg2×lg5+lg50=lg2(lg2+lg5)+lg50=lg2xlg10+lg50=lg2+lg50=lg100=2

(lg5)²+lg2×lg50

(lg5)²+lg2×(lg5+lg5+lg2)=(lg5)²+2lg2×lg5+(lg2)^2=(lg2+lg5)^2=(lg10)^2=1

lg5²+lg2*lg50化简

lg5²+lg2*lg50化简=lg5²+lg2(lg5×5×2)=lg5²+lg2(2lg5+lg2)=log5²+2×lg2×lg5+(lg2)²

求解(lg5)^2+lg50*lg2

(lg5)^2+lg50*lg2=(lg5)^2+(lg25+lg2)*lg2=(lg5)²+lg5²lg2+(lg2)²=(lg5)²+2lg5lg2+(lg

1 (lg5)^2+lg50*lg2

1.(lg5)^2+lg50*lg2=(lg5)^2+(2lg5+lg2)*lg2=(lg5)^2+2(lg2)(lg5)+(lg2)^2=(lg2+lg5)^2=(lg10)^2=12.log↓b(

(lg5)²+lg2×lg50

(lg5)²+lg2×lg50=(lg5)²+lg2×lg(5×10)=(lg5)²+lg2×(lg5+1)=(lg5)²+lg2×lg5+lg2=lg5×(l