em moi hoc lop 6.
Ai di ngang qua tich mnih cho tron 300 nhe ban
ta có: x4 >/ 0
3x2 >/ 0
=>x4+3x2 >/ 0
=>x4+3x2+2 >/ 2
=>Amin=2<=>x=0
tim gia tri nho nhat cua bieu thuc A=2(x+3) mu 2
TIM GIA TRI LON NHAT CUA BIEU THUC :
C=2+12/3x/X+5/+4
TIM GIA TRI NHO NHAT CUA BIEU THUC
C= -15/ 4x / 3X+7/+3
tim cac gia tri cua x de bieu thuc sau nhan gia tri am
a)x mu 2 + 5x b)x mu 2 - 5/2x c)3(2x+3)(3x-5) d)x - 2/x-6 e) x mu 2 -1/x mu 2
Tim gia tri nho nhat cua bieu thuc :
A= 2|3x - 1|-1
a) tim gia tri nho nhat cua bieu thuc
A= | 2x-2 | + | 2x-2019 |
b) tim x lon nhat thoa man
| 2x-4 | - | 6-3x | = -1
Tim gia tri nho nhat cua bieu thuc sau:
A = x^2+xy+y^2-3x+3y
Tim gia tri nguyen cua x đê bieu thuc M=\(\frac{2019x-2020}{3x+2}\)co gia tri nho nhat
tim cac gia tri cua x de bieu thuc sau nhan gia tri duong
a) x mu 2 + 4x b)2x mu 2 - 4x c)(x-3)(x+7) d)5(3x +1 )(4x-3) e)(1/2-x)(1/3-x)
tim gia tri nho nhat cua bieu thuc B=|x-2/3|-1