Các câu hỏi tương tự
1. hinh thoi co chu vi =25 cm .độ dai canh cua hinh thoi la ? cm
2.gia tri nho nhat 2x2-8x+5 dat tai x = ?
3.gia tri lon nhat cua 8x-2x2+5 dat tai x =?
4. tap hop cac gia tri cua n de 2n2-n+4 chia het cho 2n+1 la ?
1. cho phan tuc Afrac{x^2+5x+4}{x^2+x-12}tap hop cac gia tri cua x de phan thuc A ko xac dinh la 2.cho hinh thang ABCD co dien tich la18cm2. duong cao AH 3cm . Do dai duong trung binh hinh thang la3.cho x, y nguyen thoa man x2+4x+y2-120 . khi do gia tri lon nhat Px2+y2 la Pmax?4.gia tri nho nhat cua bieu thuc A frac{x^2}{4}+3x+y^2-frac{14}{5}y+frac{425}{25}la
Đọc tiếp
1. cho phan tuc A=\(\frac{x^2+5x+4}{x^2+x-12}\)tap hop cac gia tri cua x de phan thuc A ko xac dinh la
2.cho hinh thang ABCD co dien tich la18cm2. duong cao AH =3cm . Do dai duong trung binh hinh thang la
3.cho x, y nguyen thoa man x2+4x+y2-12=0 . khi do gia tri lon nhat P=x2+y2 la Pmax=?
4.gia tri nho nhat cua bieu thuc A= \(\frac{x^2}{4}+3x+y^2-\frac{14}{5}y+\frac{425}{25}la\)
Tim cac gia tri nguyen cua x de phan thuc sau co gia tri nguyen:
\(A=\frac{2x^3-6x^2+x-8}{x-3}\)
\(B=\frac{x+2}{x+4}\)
cho bieu thuc : M ( x phan x^2 -25 - x-5 phan x^2 +5x ) : 2x-5 phan 5x - x^2
a) rut gon M
b) tinh gia tri cua M voi x = -2010
c) tim tat ca cac gia tri nguyen cua x de M co gia tri nguyen.
tim so nguyen x de bieu thuc sau co gia tri nguyen
A=\(\frac{4x^3-6x+8x}{2x-2}\)
tim tap hop cac so nguyen x de gia tri cua da thuc x^3+3x-5 chia het cho x^2+2
1. hinh vuong co do dai canh 6\(\sqrt{2}\) thi do dai duong cheo cua hinh vuong do la ?cm
2.cho 2 phan thuc Q=\(\frac{12x^2+20x+3}{6x^2+43x+7}\)va P=\(\frac{8x^2+36x+36}{x^2+10x+21}\)voi tat ca cac gia tri cua x de 2 phan thuc P vaQ xac dinh thi khi do \(\frac{Q}{P}\)= ?
3.cho phan thuc A=\(\frac{2x^2+5x+8}{x^2-x+56}\)tap hop cac gia tri cua x de phan tuc A ko xac dinh la
tim gia tri x nguyen de bieu thuc (3x2-4x+x-1)/(3x+2) co gia tri nguyen
tim gia tri x nguyen de bieu thuc (3x3-4x2+x+1)/(x-4) co gia tri nguyen
cho phan thuc 4x-4/2x^2-2 :
a) Tim dieu kiem xac dinh
b)cho gia tri cua x=-2 tinh phan thuc
c) Tim gia tri cua x de gia tri phan thuc la so nguyen