B = -2(x2 -3x -2)= -2( x2 - 2.3x/2 + 9/4 -9/4 -2)
= -2(x-3/2)2 + 8,5
GTLN: B = 8,5
B = -2(x2 -3x -2)= -2( x2 - 2.3x/2 + 9/4 -9/4 -2)
= -2(x-3/2)2 + 8,5
GTLN: B = 8,5
tim gia tri lon nhat cua bieu thuc B=2010-x4+6x3-19x2+30x.
tim gia tri lon nhat cua M= -3x^2-6x+9
tim gia tri lon nhat cua bieu thuc sau:
C=2/x2-6x+15
gia tri lon nhat cua 4-x^2+6x
Tim gia tri nho nhat A=x2-2x
Tim gia tri lon nhat B=-x2+4x-5
Chung minh rang: x4+6x3+11x2+6x chia het cho 24 voi moi x thuoc N
tim gia tri lon nhat ( hoac nho nhat ) cua cac bieu thuc sau:
a) A = x^2 - 6x + 11
b) B = 2x^2 + 10x - 1
c) C = 5x - x^2
giai jup mik voi
tim gia tri lon nhat cua A=\(\frac{4x^2}{x^4+1}\)
Tim gia tri lon nhat cua P= -5x^2 - 4x + 1
giai chi tiet giup minh may bai nay nha
1 gia tri x>0 thoa man
(2x-3)2=(x+5)2
2 gia tri lon nhat cua -3x2-6x-4
3 tim gia tri cua x+y biet
x-y=2 ; x*y=99 va y <0
4 nghiem cua phuong trinh
(2x-3)2-4x2-297=0