Các câu hỏi tương tự
Cho phuong trinh (2x-m) / (x-2) + (x-1) / (x+2) = 3. Tim m de phuong trinh co nghiem duong.
1.tong tat ca cac nghiem cua phuong trinh : 3x4+5x3-x2-5x-2=0 la
2. tich tat ca cac nghiem cua phuong trinh 2x4+7x3-2x2-13x+6=0
Giup em voi a
Giai cac bat phuong trinh sau va bieu dien tap nghiem cua bat phuong trinh tren truc so:
a. 2(3x-1)-2x<2x-1
b. 4x-8≥3(3x-2)+4-2x
c. 3(x-2)(x+2)<3x²+x
d. (x+4)(5x-1)>5x²+16x+2
1. tong binh phuong tac ca cac nghiem cua phuong trinh :x4(x-1)+(x-1)x3=0
2.gia tri lon nhat cua bieu thuc7x-2x2
3.nghiem nho nhat cua da thuc 11x-2x2-15
Cho phuong trinh x3 +kx2 -4x -4=0
a) Xac dinh k de phuong trinh co 1 nghiem x=1
b) Voi gia tri k vua tim duoc, tim cac nghiem cua phuong trinh
Tim nghiem cua phuong trinh sau:
(2x - 1)3 + (x + 5)3 + (4 - 3x)3 = 0
chung to rang phuong trinh
6x=3 ( 2x + 2) - 6
nghiem dung voi moi gia tri cua x
tim hai nghiem cua phuong trinh (x+3)(x-3)=16
tim nghiem nguyen cua phuong trinh
x^3-y^3-2y^2-3y-1=0