25 .55trên 103 =?
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
49 x 37 = 37 x 49
(214 x 25) x 4 = 214 x (25 x 4)
103 x 18 + 103 x 12 = 103 x (18 + 12)
\(\left[25\cdot103+7225:17-\left(1500-125\right):5\right]\cdot32\)
\(=\left[2575+425-1375:5\right]\cdot32\)
\(=\left[2575+425-275\right]\cdot32\)
\(=2725\cdot32\)
\(=87200\)
\(\left|2x-3\right|+4.25=103\Leftrightarrow\left|2x-3\right|=3\Rightarrow\orbr{\begin{cases}2x-3=3\\2x-3=-3\end{cases}}\Leftrightarrow\orbr{\begin{cases}x=3\\x=0\end{cases}}\)
\(\left(-25\right)\cdot\left(-2\right)^2+\left(103-5^2\right)=\)
\(-25\times4+\left(103+25\right)=-100-128=-128\)
a: =75^2-2*75*25+25^2
=(75-25)^2=50^2=2500
b: =(100-3)(100+3)
=100^2-9
=10000-9
=9991
a, =25- 62-25 +12
= (25-25)+12-62
= -50
b, = -24 -68+24 + 2. (-60)
= (-24+24)-68 + -120
= -188
c,
a) \(103^2=\left(100+3\right)^2=10000+600+9=10609\)
b) \(52\cdot48=\left(50-2\right)\left(50+2\right)=2500-4=2496\)
c) \(75^2-50\cdot75+25^2=\left(75-25\right)^2=50^2=2500\)
\(103^2=\left(100+3\right)^2=100^2+2.3.100+3^2=10000+600+9=10609\)
\(52.48=\left(50+2\right)\left(50-2\right)=50^2-2^2=2500-4=2496\)
\(75^2-50.75+25^2=75^2-25.75-25.75+25^2=75\left(75-25\right)-25\left(75-25\right)=\left(75-25\right)=50^2=2500\)
Ta có: \(\frac{2^5.5^3}{10^3}=\frac{2^5.5^3}{2^3.5^3}=2^2=4\)
Bài làm :
Ta có :
\(\frac{2^5.5^3}{10^3}=\frac{2^5.5^3}{2^3.5^3}=\frac{2^5}{2^3}=2^2=4\)