\(3^{17}.81^{11}:27^{10}.9^{15}\)
=\(3^{17}.\left(3^4\right)^{11}:\left(3^3\right)^{10}.\left(3^2\right)^{15}\)
=\(3^{17}.3^{44}:3^{30}.3^{30}\)
=\(3^{17+44-30+30}\)
=\(3^{61}\)
\(\dfrac{3^{17}nhân81^{11}}{27^{10}nhân9^{15}}\)
tìm x, bt
a)x+1/55+x+3/53+x+5/51=x+7/49+x+9/47+x+11/45
b)x+29/31-x+27/33=x+17/43-x+15/45
Mg ơi, giúp bé vs đc ko ạ!
\(3^x+3^{x+2}=9^{17}+27^{12}\)
giúp mình với mình cần gấp nha❤❤
tinh nhanh
A=\(\dfrac{1}{3}-\dfrac{3}{4}-\left(\dfrac{-3}{5}\right)+\dfrac{1}{64}-\dfrac{2}{9}-\dfrac{1}{36}+\dfrac{1}{15}\)
B=\(\dfrac{1}{3}-\dfrac{3}{5}+\dfrac{5}{7}-\dfrac{7}{9}+\dfrac{9}{11}-\dfrac{11}{3}+\dfrac{13}{15}+\dfrac{11}{15}-\dfrac{9}{11}+\dfrac{7}{9}+\dfrac{7}{9}-\dfrac{5}{7}+\dfrac{3}{3}-\dfrac{1}{3}\)
giup minh nhe minh dang can gap
Cau 1: neu √x = 3 thi x2 bang
A. 3
B. 9
C. 27
D.81
B=\(\frac{1}{3}-\frac{3}{4}-\left(-0,6\right)+\frac{1}{64}-\frac{2}{9}-\frac{1}{36}+\frac{1}{15}\)
C=\(\frac{1}{3}-\frac{3}{5}+\frac{5}{7}-\frac{7}{9}+\frac{9}{11}-\frac{11}{13}+\frac{13}{15}+\frac{11}{15}+\frac{11}{13}-\frac{9}{11}+\frac{7}{9}-\frac{5}{7}+0,6-\frac{1}{3}\)
D=\(\frac{1}{99}-\frac{1}{99.98}-\frac{1}{98.97}.....-\frac{1}{3.2}-\frac{1}{2.1}\)
thực hiện phép tính
a, (3/5+-3/4+1/20):1/2-1/2
b,12/3::1/6+11/4.(1/2-1/5)
c,0,75-(13/11-50%):5/11
d,1/27:(-1/3)2+75%.(-22/3)
Giải giúp mình với
giaỉ thích : vd: -22/3 là âm 2 phần 3...
B=-3-2 phần 3 + 3 phần 5 (-10 phần 9 - 25 phần 3 ) - 5 phần 6
Giúp mik vs
47 nhân 83 phần 220
