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=?

1. gia tri x >1 thoa man (9x-7)²=(5-2x)²

2.tong binh phuong tat ca cac gia tri x thoa man : 2(x+5)=x²+5x

3. gia tri cua x³+y³ biet x+y=2 va x²+y²=20

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)

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 cua x thoa man (2x+3)(x+1)²-(2x+3)(2x-3)

2. so nghiem cua da thuc x³+6x²+11x+6 la ?

3. bieu thuc C = 8-5x-2x² dat gia tri lon nhat tai x = ?

1. nghiem nho nhat cua da thuc 11x-2x²-15

2.gia tri x nho nhat thoa man : 4x²+7x+3=0

3.gia tri lon nhat cua bieu thuc7x-2x²

.

giup to 3 bai nay

1. gia tri cua x thoa man (2x+3)(x+1)²-(2x+3)(2x-3)

2. so nghiem cua da thuc x³+6x²+11x+6 la ?

3. bieu thuc C = 8-5x-2x² dat gia tri lon nhat tai x = ?

giup to 3 bai nay

1. gia tri cua x thoa man (2x+3)(x+1)²-(2x+3)(2x-3)

2. so nghiem cua da thuc x³+6x²+11x+6 la ?

3. bieu thuc C = 8-5x-2x² dat gia tri lon nhat tai x = ?

so gia tri cua x thoa man |x-1|+|2x-6|=12