Các bạn ơi giúp mk vs gpt x(can cua x+1) -2(can cua x+1)-3x-1=0
Giáp Phuong Trinh 3(x2+x+1)=(x+can bac hai cua x-1)2
giai cac phuong trinh sau
a) x + 5 can x - 6 =0
b) x - can x + 1/4 = 0
giai cac phuong trinh sau
a) x + 5 can x - 6 =0
b) x - can x + 1/4 = 0
giai cac phuong trinh sau
a) x + 5 can x - 6 =0
b) x - can x + 1/4 = 0
a) Cho phuong trinh x2 +mx+1=0. Tim dieu kien cua m de phuong trinh co nghiem kep. Tinh nghiem kep do
b) Khong giai phuong trinh, chung to phuong trinh 2x2 - 3x - 5 = 0co 2 nghiem phan biet x1 , x2. Tinh ( x1 - x2 )
GIAI PHUONG TRINH
CAN 1+3x =X-1
Giai he phuong trinh
x(x+y)+can (x+y)=can (2y) [can(2y^3)+1]
8x^2-8y+2(x^3-y^3)+3=8y can(2x^3-3x+1)
tat ca deu la can bac hai
cho phuong trinh 2x2+4x-1=0 co hai nghiem x1,x2. khong giai phuong trinh hay tinh gia tri cua bieu thuc A=x1x2+x13x2