Các câu hỏi tương tự
bài 1 tínha)-frac{1}{4} b)left(-2frac{1}{3}right)^2 c)(0,5)3 d)left(-1frac{1}{3}right)^4bai 2 tìm x , biếta)x:left(-frac{1}{3}right)^3-frac{1}{3} b)left(x+frac{1}{2}right)^2frac{1}{16} c)left(frac{4}{5}right):xleft(frac{4}{5}right)^7 d)3x+127bài 3 so sánha)10^{20}va9^{10} b)left(-5right)^3^0valeft(-3right)^{50} c)64^8va16^{12} d)left(frac{1}{16}right)^{10}valeft(frac{1}{2}right)^{50}
Đọc tiếp
bài 1 tính
a)\(-\frac{1}{4}\) b)\(\left(-2\frac{1}{3}\right)^2\) c)(0,5)3 d)\(\left(-1\frac{1}{3}\right)^4\)
bai 2 tìm x , biết
a)x:\(\left(-\frac{1}{3}\right)^3\)=\(-\frac{1}{3}\) b)\(\left(x+\frac{1}{2}\right)^2=\frac{1}{16}\) c)\(\left(\frac{4}{5}\right):x=\left(\frac{4}{5}\right)^7\) d)\(3x+1=27\)
bài 3 so sánh
a)\(10^{20}va9^{10}\) b)\(\left(-5\right)^3^0va\left(-3\right)^{50}\) c)\(64^8va16^{12}\) d)\(\left(\frac{1}{16}\right)^{10}va\left(\frac{1}{2}\right)^{50}\)
so sánh:
\(\left(\frac{1}{16}\right)^{250}\)và\(\left(\frac{1}{2}\right)^{1500}\)
1. Tính:
\(\frac{1}{2}\left(1+\frac{1}{1.3}\right)\left(1+\frac{1}{2.4}\right)\left(1+\frac{1}{3.5}\right)\left(1+\frac{1}{4.6}\right)...\left(1+\frac{1}{2015.2017}\right)\)
2. Tính B = \(13x^5-5y^3+2016\) tại x,y thỏa mãn tuyệt đối x-1 tuyệt đối + \(\left(y+2\right)^{20}=0\)
3. Tìm a,b,c biết: a,b tỉ lệ nghịch vs 2;3 và b,c tỉ lệ nghịch vs 1/4; 1/5; và a+b+c=11
So sánh
\(\left(\frac{1}{16}\right)^{10}va\left(\frac{1}{2}\right)^{50}\)
\(\frac{\left(13\frac{1}{4}-2\frac{5}{7}-\frac{105}{6}\right).230\frac{1}{5}+46\frac{3}{4}}{\left(1\frac{3}{7}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
Xem chi tiết
2frac{1}{315}.frac{1}{651}-frac{1}{105}.3frac{650}{651}-frac{4}{315.651}+frac{4}{105}left(2+frac{1}{315}right).frac{1}{651}-frac{1}{105}.left(3+frac{650}{651}right)-frac{4}{315.651}+frac{4}{105}2.frac{1}{651}+frac{1}{315}.frac{1}{651}-frac{1}{105}.3+frac{1}{105}.frac{650}{651}-frac{4}{315.651}+frac{4}{105}frac{2}{651}+frac{1}{315.651}-frac{3}{105}-frac{650}{105.651}-frac{4}{315.651}+frac{4}{105}frac{2}{615}+left(frac{1}{315.651}-frac{4}{315.651}right)+left(frac{-3}{105}+frac{4}{105}right)-frac{6...
Đọc tiếp
\(2\frac{1}{315}.\frac{1}{651}-\frac{1}{105}.3\frac{650}{651}-\frac{4}{315.651}+\frac{4}{105}\)
\(=\left(2+\frac{1}{315}\right).\frac{1}{651}-\frac{1}{105}.\left(3+\frac{650}{651}\right)-\frac{4}{315.651}+\frac{4}{105}\)
\(=2.\frac{1}{651}+\frac{1}{315}.\frac{1}{651}-\frac{1}{105}.3+\frac{1}{105}.\frac{650}{651}-\frac{4}{315.651}+\frac{4}{105}\)
\(=\frac{2}{651}+\frac{1}{315.651}-\frac{3}{105}-\frac{650}{105.651}-\frac{4}{315.651}+\frac{4}{105}\)
\(=\frac{2}{615}+\left(\frac{1}{315.651}-\frac{4}{315.651}\right)+\left(\frac{-3}{105}+\frac{4}{105}\right)-\frac{650}{105.651}\)
\(=\frac{2}{651}-\frac{3}{315.651}+\frac{1}{105}-\frac{650}{105.651}\)
\(=\left(\frac{2}{651}+\frac{1}{105}\right)-\frac{650}{105.651}-\frac{3}{315.651}\)
\(=\left(\frac{2.105}{105.651}+\frac{651}{105.651}\right)-\frac{650}{105.651}-\frac{3}{315.651}\)
\(=\frac{211}{105.651}-\frac{3}{315.651}\)
\(=\frac{1}{651}.\left(\frac{211}{105}-\frac{3}{315}\right)\)
\(=\frac{1}{651}.\left(\frac{633}{315}-\frac{3}{315}\right)\)
\(=\frac{1}{651}.2\)
\(=\frac{2}{651}\)
Tính
a) \(-1\frac{5}{7}x15+\frac{2}{7}x\left(-15\right)+\left(-105\right)x\left(\frac{2}{3}-\frac{4}{5}+\frac{1}{7}\right)\)
b) \(\frac{3^6x45^4-15^{13}x5^{-9}}{27^4x25^3+45^6}\)
c) \(\frac{\left(\frac{2}{5}\right)^7x5^7+\left(\frac{9}{4}\right)^3:\left(\frac{3}{16}\right)^3}{2^7x5^2+512}\)
1, a) left(frac{1}{4}right)^{20}.left(frac{1}{2}right)^5 b) left(frac{1}{9}right)^{25}:left(frac{1}{3}right)^{20} c) left(frac{1}{16}right)^2:left(frac{1}{8}right)^32, Afrac{10^2-8^2}{6^2} b) Bfrac{25^4+10^4}{25^2+16} c) Cfrac{9^2.15^3}{3^7.5^2} d) Dfrac{6^{10}-3^{10}}{2^{10}-1}
Đọc tiếp
1, a) \(\left(\frac{1}{4}\right)^{20}.\left(\frac{1}{2}\right)^5\) b) \(\left(\frac{1}{9}\right)^{25}:\left(\frac{1}{3}\right)^{20}\) c) \(\left(\frac{1}{16}\right)^2:\left(\frac{1}{8}\right)^3\)
2, A=\(\frac{10^2-8^2}{6^2}\) b) B=\(\frac{25^4+10^4}{25^2+16}\) c) C=\(\frac{9^2.15^3}{3^7.5^2}\) d) D=\(\frac{6^{10}-3^{10}}{2^{10}-1}\)
So sánh các lũy thừa sau
a, \(\left(\frac{1}{16}\right)^{10}va\left(\frac{1}{2}\right)^{50}\)
b, 9920 và 999910