(mình không rõ đề cho lắm ...)
\(\dfrac{1}{4^2}.16^2\)=\(\dfrac{4^4}{4^2}=4^2\)
=16
Đúng 0
Bình luận (0)
Bài 3: Nhân, chia số hữu tỉ
Các câu hỏi tương tự
(x-5) mũ 2 nhân x = x-5
Tìm tất cả các số hữu tỉ x biết (2/5-3x )mũ 2-1/5=4/25
4/7 mũ n+2=7/4
Tính
A=\(\dfrac{\dfrac{1}{3}-\dfrac{1}{7}-\dfrac{1}{13}}{\dfrac{2}{3}-\dfrac{2}{7}-\dfrac{2}{13}}.\dfrac{\dfrac{3}{4}-\dfrac{3}{16}-\dfrac{3}{64}-\dfrac{3}{256}}{1-\dfrac{1}{4}-\dfrac{1}{16}-\dfrac{1}{64}}+\dfrac{5}{8}\)
5.2 mũ x+1.2 mũ -2-2 mũ x=384
a) (1/2)3.(1/4)2
b)16: (0,125)3.512
Tính :
a) -dfrac{3}{4}.31dfrac{11}{23}-0.75.8dfrac{12}{23}
b) left(2dfrac{1}{3}+3dfrac{1}{2}right):left(-4dfrac{1}{6}+3dfrac{1}{7}right)+7dfrac{1}{2}
c) 4dfrac{5}{9}:left(dfrac{-5}{7}right)+5dfrac{4}{9}:left(dfrac{-5}{7}right)
d) 4dfrac{25}{16}+25left(dfrac{9}{16}:dfrac{125}{64}:dfrac{-27}{8}right)
e) dfrac{2}{3}-4left(dfrac{1}{2}+dfrac{3}{4}right)
Đọc tiếp
Tính :
a) \(-\dfrac{3}{4}.31\dfrac{11}{23}-0.75.8\dfrac{12}{23}\)
b) \(\left(2\dfrac{1}{3}+3\dfrac{1}{2}\right):\left(-4\dfrac{1}{6}+3\dfrac{1}{7}\right)+7\dfrac{1}{2}\)
c) \(4\dfrac{5}{9}:\left(\dfrac{-5}{7}\right)+5\dfrac{4}{9}:\left(\dfrac{-5}{7}\right)\)
d) \(4\dfrac{25}{16}+25\left(\dfrac{9}{16}:\dfrac{125}{64}:\dfrac{-27}{8}\right)\)
e) \(\dfrac{2}{3}-4\left(\dfrac{1}{2}+\dfrac{3}{4}\right)\)
tính nhanh
a) -5/12+4/37+17/12-41/37
b) 1/2+-3/5:(-1/1/2)-|-2/5|
c)8^15 x 3^16/4^22 x 9^8
d)35/1/6:(-4/5)-45/1/6:(-4/5)
e) (5/12:10/3)+(1/2)^2
Tìm x khi
a) x : ( 2/9 - 1/5 ) = 8/16
b) ( x + 1/2 ) . ( x - 3/4 ) = 0