Các câu hỏi tương tự
gia tri cua bieu thuc (x - 2).(x+4) khi x = -1 la so nao trong bon dap so A,B,C,D duoi day:
A 9 B -9 C 5 D-5
nho giai thich vi sao lai ra so do nha
gia tricua bieu thuc (x-2)x(x+4)khix=-1la so nao trong 4 ddap an so a,b,c,dduoi day
9;-9;5;-5
bai 1;tinh gia tri bieu thuc 17a+15b+6a+8b voi a+b =100
bai 2;tich cua 2 so la 6210.neu giam 1 thua so di 7 don vi thi tich moi la 5265.tim cac thua so cua tich
bai 3;co 5 so tu nhien nao ma tich cua chung bang1001 va chu so tan cung la 6
bai 4;tinh;333...3.999...9 trong do co 50 chu so 3 va 50 chu so 9
a) tim gia tri nho nhat cua bieu thuc : A = | 1-x | + 8
b) tim cac so nguyen x biet 13 la boi cua x - 4
c) tim so nguyen x sao cho ( x + 5 ) chia het cho ( x + 3 )
giup minh voi! minh can gap gap gap.....
CHO bieu thuc
B=17,58*43+57*17,58/293*A
a)tim gia tri cua bieu thuc Bkhi a=2
b)tinh gia tri a khi B=2
c)tim gia tri so tu nhien ad biet bieu thuc B co gia tri lon nhat ,gia tri lon do la bao nhieu
29 tháng 4 2019 lúc 21:26
-0,6 x X - 7/3 = 5,4
2,8 : (1/5 - 3 x X) = 1 2/5
lop 6a co 3 loai hs gioi kha va trung binh. trong do 2/3 so hs gioi la 8 em. so hs gioi bang 80% so hs kha. so hs trung binh bang 7/9 tong so hs kha va hs gioi tim so hs cua lop
tinh gia tri cua bieu thuc sau: a= 7/4 x (3333/1212 + 3333/2020 + 3333/3030 + 3333/4242)
Voi gia tri nao cua x thuoc Z ; phan so sau co gia tri la 1 so nguyen
a. A=3/x-1
b. C=2x+1/x-3
c. D=x mũ 2 tru 1/x+!
Tim so nguen x sao cho cac bieu thuc sau co gia tri nho
a)A=(x-1)2+2014
b)B=/x+4/+2014
c)C=\(\frac{5}{x-2}\)
d)D=\(\frac{x+5}{x-4}\)
tim cac dang cua x sao cho
bieu thuc A = 2x-1 co gia tri duong x
bieu thuc B = 8-2x co gia tri am
bieu thuc C=2(x+3) khong am
bieu thuc D=7(2-x)khong duong