1. gia tri x >0 thoa man x3+x2-8x-8=0
2 gia tri x<0 thoa man 1/27x2-(1/2)3=0
giup to 3 bai nay
1. gia tri x lon nhat thoa man : x2(5x-20)=15x
2 gia tri x >0 de -3x4+12x2+1 dat gia tri lon nhat
3. tap hop cac gia tri cua x thoa man : x4+x3+2x-4=0
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. 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
1 gia tri nho nhat cua x4+x2-5.42
2.biet (x0;y0) thoa man x2+y2-4(x-y-2)=0
3. tap hop cac gia tri cua x thoa man (3x+2)2=(x+5)2
gia tri cua x>0 thoa man phuong trinh \(1+\frac{1}{x+2}=\frac{12}{x^3+8}\)
1.gia tri x<0 thoa man (2x-3)2=(x+5)2
2.tap hop cac gia tri cua x thoa man x4-2x3+10x2-20x=0 la S(....)
3.phan tich da thuc xy-12+3x-4 ta duoc (x+a)(y+b) khi do a+b=?
giup to 2 bai nay
1. gia tri 3-25x2=0
2 tap hop cac gia tri cua x thoa man : x4+x3+2x-4=0
giup to 2 bai nay
1. gia tri x lon nhat thoa man x2(5x-2)+6=15x
2. gia tri x>0 de -3x4+12x2+1 dat gia tri lon nhat
