a/ x - 2 = 0 => x = 2
b/ x2 - 4x + 4 = 0 => (x - 2)2 = 0 => x - 2 = 0 => x = 2
a \ x-2=0 b\x^2-4x+4=0
<=>x=0+2 <=>(x-2)^2=0
<=>x=2 <=>x-2=0
=>x=2
a) x - 2 = 0
<=>x=2
b)x2-4x+4=0
<=>(x-2)2=0
<=>x-2=0
<=>x=2
a) x - 2 = 0
<=>x=2
b)x2-4x+4=0
<=>(x-2)2=0
<=>x-2=0
<=>x=2
1)Giai phuong trinh:
a) x4+4x2-5=0
b)Cho phuong trinh: x2-2(m+1)x+m2+3m-4=0(1)
Giai phuong trinh khi m=2Chung minh phuong trinh luon co nghiem voi moi m.Goi x1,x2 la nghiem cua phuong trinh,tim m de thoa man dieu kien:x12+x22=10giai phuong trinh va he phuong trinh sau:
x2 + 5x -6=0
b{4x+5y=3
{x-3y=5
giai mau giup toi nhe cac ban
giai phuong trinh \(x^4-2x^3+4x^2-3x-4=0\)
Cho phuong trinh bac hai 4x^2-2(√10)+1=0 co hai nghiem x1,x2.Khong giai phuong trinh, hay tinh gia tri bieu thuc(√x14+8x22)+(√x24+8x12).
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
Giai phuong trinh
x4_4x3_ 9x2+8x+4=0
giai he phuong trinh
2x^2+y^2-3xy+3x-2y+1=0
4x^2-y^2+x+4=cbh(2x+y)+cbh(x+4y)
cbh là Căn bậc hai
GIai phuong trinh (x^2+x+4)+8x.(X^2+x+4)+16x^2=0
Giai phuong trinh sau
\(X\sqrt{2x-1}-\sqrt{4x^2-1}-0\)
