Các câu hỏi tương tự
f(x) = 2 (x^3 - x) + x^2 - 3x + 3 - x^3
a) Thu gon hai da thuc tren roi xep theo luy thua giam dan cua bien
b) Tinh f(-1);g (1/2)
c) Tim f(x) + g(x);f(x) - g(x)
d) Tim gia tri cua x de f(x) = g(x) (giup mk voi mk dang can gap)
bai 1: cho cac da thuc
f(x)= x^5-3x^2+7x^4-x^5+2x^2-9x^3+x^2-1/4x+2x-3
g(x)=5x^4-x^5+1/2x^4+x^5+x^2-4x^4-2x^3+3x^2+x^3-1/4
a, thu gon va sap xep cac da thuc tren theo luy thua giam dancua ien
b,tinh f(1);f(-1); g(1); g(-1)
c,tinh f(x)+g(x);f(x)-g(x)
cho hai da thuc:
\(P\left(x\right)=2x^3-5x^2-3x^4+7-4x\)va \(Q\left(x\right)=-3+2x^4-x+x^3-5x^2\)
a)sap xep da thuc P(x) va Q(x) theo luy thua giam dan cua bien
b)tinh P(x) + Q(x) va P(x) - Q(x)
cho da thuc f(x) =-6x^3 + 8x^2 -1/2 -4^4 va g(x) = 4x^4+5/2-5x^2+6x^3
tinh h(x)=f(x)+g(x)
chung to h(x) khong co nghiem
thu gon da thuc va sap xep da thuc
f (x)=5x^2-1+3x+x^2-5x^2
Cho A ( x ) = 8-5x+3x2-15-3x+16
B ( X ) =5x-2x2=4x-1-x2-3x
a) thu gon A va B sap xep theo so mu giam dan
b) tim da thuc C biet C ( x) + A ( x)= B ( x)
cho 2 da thuc
m(x)=3x3+x2+4x4-x-3x3+5x4+x2
n(x)=-x2-x4+4x3-x2-5x3+3x+1+x
a, thu gon va sap sep theo luy thua giam dan
b tinh m(x)+n(x) ; n(x)-m(x)
c dat p(x)=m(x)+n(x) tinh p (x)=-2
cho da thuc f(x)+3x^2+2x-5va g(x)=-3x^2-2x+2 tinh k=f+g va tim bac cua k
cho hai da thuc sau:
f(x) = ( x-1) ( x+2) g(x) = x3 + ax2 +bx +2 A) tim nghiem cua f(x) B) xac dinh a va b biet nghiem cua da thuc f(x) cung la nghiem cua da thuc g(x)