Các câu hỏi tương tự
bài 1 tính \(\frac{10^{19}.7^{21}}{49.14^{18}.5^{20}}+\frac{15^{31}.32^5}{6^{24}.3.5^{30}}\)
bài 2) giá trị của x lớn hơn 0
lx-9l+(-l2-xl)=0
1.gia tri a de da thuc P(x)=3x3-8x2+6x-a chia het cho Q(x)=3x2-5x+1 la a =?
2.khi a+b=1 .gia tri nho nhat cua bieu thuc a3+b3+ab la?
3.tong cac gia tri cua x thoa man x5=x4+x3+x2+x+2 la?
tim tap hop cac so nguyen x de gia tri cua da thuc x^3+3x-5 chia het cho x^2+2
1.gia tri cu m de phuong trinh 8x-7+m=x-6 co nghiem la x=-2
2.gia tri x lon nhat thoa man c+\(\sqrt{3}\)+3x2-9=0
3.tich cac gia tri x thoa man x2-\(\frac{1}{10}\)x-\(\frac{1}{5}\)=0
1.cho phan thuc P=\(\frac{5x-4y}{5x+4y}\)voi 25x2+16y2=50xy.khi do gia tri cua bieu thuc P=\(\frac{1+P^2}{1-P^2}\)la
2.gia tri lon nhat cua bieu thuc B=\(\frac{14}{\frac{x^2}{4}-3x+16}la\)
3.gia tri cua a de da thuc A=2x3+7x2+ax+3 chia het cho B=(x+1)2la a=?
cau 1 cho x y la 2 so thoa man x2-y2 =2
vay gia tri cua bieu thuc A=2(x6-y6)-6(x4+y4)=.................
cau 2 ch da thuc A(X)=2X2 +ax+b
biet da thuc A(X) chia het cho da thuc B(x)=x-3 va C(x)=2x+1
vay 3a-2b=...................
1. tich cac gia tri x thoa man x2-\(\frac{1}{10}\)x-\(\frac{1}{5}\)+0
2.gia tri cua x de bieu thuc A=6x2+7x-8 dat gia tri nho nhat
3.tích cac gia tri cua x thoa man (2x-1)2=(2-x)2
giup to hai bai nay
1. gia tri X thoa man 4x*(5x-1)+10x*(2-2x)=16
gia tri x thoa man (x^2+1)*(x^2+5)
2. tinh gia tri bieu thuc A
A=(202+182+162+...+42+22)-(192+172+152+...+32+12)
Cho bieu thuc \(B=\left(\frac{21}{x^2-9}-\frac{x-4}{3-x}-\frac{x-1}{3+x}\right):\left(1-\frac{1}{x+3}\right)\)
a) Rut gon B
b) Tinh gia tri bt B tai x thoa man : l 2x+1 l=5
c) Tim x de B=\(\frac{-3}{5}\)
d) Tim x de B<0