Các câu hỏi tương tự
cho biet x=-2 la nghiem cua da thuc p(x)=ax+b tinh gia tri bieu thuc 2011a+b/3a-b
cho4 so ko am a,b;c;d thoa man a+b+c+d=1 . Goi S la tong cac tri tuyet doi cua hieu tung cap so co duoc tu 4 so nay. S co the dat gia tri lon nhat la bao nhieu ?
xin loi cac ban vi cau hoi cua minh ko co dau nen hoi kho hieu mong cac ban giup do nha thankyou
cho cac da thuc f(x)=ax+b va g(x)=bx+a trong do a;b khac 0 biet rang nghiem cua da thuc f(x) la so duong cmr nghiem cua da thuc g(x) cung la 1 so duong
Cac ban giup minh voi minh can nop gap
Tim gia tri nho nhat cua bieu thuc:
P= / x-1/+/x-2017/+/x-2018/
* Dau gach cheo la dau gia tri tuyet doi nhe
1) Cho biet X=-2 la nghiem cua p(x) =aX+b (a khac 0 ) tinh \(\frac{2016a+b}{3a-b}\)
2)xho biet X=-2 la nghiem cua da thuc A(x)=aX+b (a khac 0) Tinh \(\frac{2014a+b}{3a-b}\)
tim nghiem cua da thuc: 3x2- x
(minh muon xem cach trinh bay cua minh dung ko nen cac ban lam giup minh nhe)
Hihihi.Hi moi nguoi.Minh se dat mot cau hoi ve dai so lop 7,mong moi nguoi chi giai,boi vi toan minh hoc chua gioi lam nen co cac bai toan con thac mac,len day de mong nhan duoc su giup do,de toan nhu sau:(1)Da thuc P(x)x2016 +2013x + 2012 co ngiem duong khong?Vi sao?. 2 Bai nua nhe(*^-^*): (2)Cho hai da thuc: M(x)2,52 -0,5x-x3-1 1/2N(x)-x3+2,5x2-6+2xa)Tim A(x)M(x)-N(x).Sau do tim mot ngiem cua da thuc A(x)b)Tim da thucB(x) biet B(x)M(x)+N(x).Cho biet bac cua da thuc...
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Hihihi.Hi moi nguoi.Minh se dat mot cau hoi ve dai so lop 7,mong moi nguoi chi giai><,boi vi toan minh hoc chua gioi lam nen co cac bai toan con thac mac,len day de mong nhan duoc su giup do,de toan nhu sau:(1)Da thuc P(x)=x2016 +2013x + 2012 co ngiem duong khong?Vi sao?. 2 Bai nua nhe(*^-^*):
(2)Cho hai da thuc: M(x)=2,52 -0,5x-x3-1
1/2N(x)=-x3+2,5x2-6+2x
a)Tim A(x)=M(x)-N(x).Sau do tim mot ngiem cua da thuc A(x)
b)Tim da thucB(x) biet B(x)=M(x)+N(x).Cho biet bac cua da thuc B(x).
(3)Cho da thuc:f(x)=ab2 + bx + c.Chung to neu f(x) co ngiem x=-1 thi b=a+c.
MOT BAI NUA THOI MA.NHA NHA NHA MOI NGUOI^_^:
(4)Cho hai da thuc:A=(-1/2axy3)2 va B=(-3a2 x2)3 (a la hang so khac 0).
a)Tinh M=A.B roi cho biet he so va phan bien cua M
b)Tim bac cua M.
AI CO CAU TRA LOI NHAN TIN TRA LOI CHO MINH BIET NHAAAAA.CAM ON!!!!!.
dang I. Tim gia tri bieu thucBai 5: Cho x - y 9, tinh gia tri cua bieu thucBfrac{4x-9}{3x+y}-frac{4y+9}{3y+x}(x khac -3y, y khac -3x)Bai 6: Hay viet cac da thuc duoi dang tong cua cac don thuc roi thu gon. tinh gia tri bieu thuc khi x-1, y1a,D4x(x+y)-5y(x-y)-4x^2 b,E(a-1)(x^2+1)-x(y+1)+(x+y^2-a+1)moi nguoi giup minh di hu hu
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dang I. Tim gia tri bieu thuc
Bai 5: Cho x - y =9, tinh gia tri cua bieu thuc
B=\(\frac{4x-9}{3x+y}\)-\(\frac{4y+9}{3y+x}\)(x khac -3y, y khac -3x)
Bai 6: Hay viet cac da thuc duoi dang tong cua cac don thuc roi thu gon. tinh gia tri bieu thuc khi x=-1, y=1
a,D=4x(x+y)-5y(x-y)-4x\(^2\) b,E=(a-1)(x\(^2\)+1)-x(y+1)+(x+y\(^2\)-a+1)
moi nguoi giup minh di hu hu
cho ti le thuc \(\frac{a}{b}\)=\(\frac{c}{d}\)
chung minh rang\(\frac{a}{b}\)=\(\frac{7a+5c}{7b+5d}\)[b+d khac 0]
cac ban co biet tai sao minh go dau cac chu cai thi chu cai do va dau deu bien mat khong? giup minh voi , cau hoi tren la 1 vi du