viet bieu thuc sau thanh tich co 3 thua so
12+21+20+11+15+51
Những câu hỏi liên quan
VIET MOI BIEU THUC SAU THANH TICH CUA 2 THUA SO : a, 27+31+41+54+67+80+90+94
27 + 31 + 41 + 54 + 67 + 80 + 90 + 94
= 484 =242 *2
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1/Hay viet bieu thuc dai do bieu thi chu vi cua hinh chu nhat co chieu dai hon 2 lan chieu rong 3m
2/ Hay viet bieu thuc dai so bieu thi chu vi cua hinh chu nhat co 3 lan chieu ronh hon chieu dai 8m
3/ hay viet bieu thuc dai so bieu thi the tich cua hinh hop chu nhat co chieu dai hon chieu ronh 4cm va hon chieu cao 2cm
4/ hay viet bieu thuc dai so bieu thi :
a) tong cua x^2 va 3y
b) tong cac binh phuong cua a va b
khi thuc hien phep nhan 2 thua so, mot ban da viet nham 2 chu so cuoi cung cua thua so thu 1 la 35 thanh 53 nen co ket qua la 22197.tim 2 thua so da cho, biet rang tich dung cua chung la 21315
Voi sau chu so 3 va dau ngoac, dau phep tinh va so mu. Hay viet thanh bieu thuc co gia tri 106 bang 3 cach.
viet cac bieu thuc sau duoi dang tich: x^3 y^3+225
\(x^3y^3+125=\left(xy+5\right)\left(x^2y^2-5xy+25\right)\)
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viet ket qua cua tich co 20 thua so sau duoi mot luy thua :10.100.1000.....10..0
viet cac bieu thuc sau duoi dang mot luy thua
32x8 mu 5x1024
Chung to rang hieu sau co the viet duoc thanh mot tich cua hai thua so bang nhau 11111111-2222
bai 1. 11/3.40/13+37/5:7/33-(11/13.1/3+33/7:5/2)
bai 2.tim x
a,3.(x-1)-5.(-7)(-2)^3-2x
b,2./(1-x)^2+1/-2^2.38
bai 3,cho bieu thuc
Mn+1/n+1 - 3-8n/n+1 + 8/n+1
tim cac gia tri cua n de bieu thuc M co gia tri la so nguyen
bai 4,So hoc sinh cua 1 truong ko qua 1000 em,neuxeptoan bo so hoc sinh cua truong do thanh cac hang,moi hang 20 nguoi thi con thieu 5 nguoi,neu xep moi hang 25 nguoi hoac 30 nguoi thi deu thua 15 nguoi , neu xep 42 hang thi vua du . hoi truong do co bao nhieu hoc sinh...
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bai 1. 11/3.40/13+37/5:7/33-(11/13.1/3+33/7:5/2)
bai 2.tim x
a,3.(x-1)-5.(-7)=(-2)^3-2x
b,2./(1-x)^2+1/-2^2.3=8
bai 3,cho bieu thuc
M=n+1/n+1 - 3-8n/n+1 + 8/n+1
tim cac gia tri cua n de bieu thuc M co gia tri la so nguyen
bai 4,So hoc sinh cua 1 truong ko qua 1000 em,neuxeptoan bo so hoc sinh cua truong do thanh cac hang,moi hang 20 nguoi thi con thieu 5 nguoi,neu xep moi hang 25 nguoi hoac 30 nguoi thi deu thua 15 nguoi , neu xep 42 hang thi vua du . hoi truong do co bao nhieu hoc sinh
bai 5,cho bieu thuc
A=2+2^2+...+2^200
c/m rang
a, A+2 la 1 luy thua cua 2
b, Achia het cho 30
c,A co phai la so chinh phuong ko ? vi sao ?
bai 6,cho 2 bieu thuc
A=1/1+2 + 1/1+2+3 + ...1/1+2+3+...+99
B=1 + 1/2^2+1/3^2 + ...+1/49^2
c/m rang A<B
3(x-1)-5x(-7)=-2^3-2x
3x-3x1--35=-8-2x
3x+32=-8-2x
3x+2x=-8-32
5x=-40
x=-40:5
x=-8
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