x2-12x+20
tim nghiem da thuc
1)Tim he so a cua da thuc A(x)=-7x2-3y2 +9xy-2x2+y2,biet rang da thuc co1 nghiem bang\(\dfrac{1}{2}\)
2) Tim m, biet rang da thuc Q(x)=mx2 + 2mx -3co 1 nghiemx=-1
tim nghiem da thuc 4x+9 , -5x+6 , x^2-1 , x^2-9 , x^2-x , x^2-2x , x^2-3x , 3x^2-4x
Chung to rang neu a+b+c=0 thi x=1 la mot nghiem cua da thuc ax\(^2\)+bx+c.
cho da thuc f(x)=x^2+bx+c
Tim b,c biet f(x) co 2 nghiem 1, 2
giup mk nha
ă
cmr da thuc sau khong co nghiem : \(x^{10}-x^5+x^2-x+1\)
Tim nghiem
x^3 +2x^2+2x+1
Chung to da thuc M(x)=(x-3)2 + |2-x| vo nghiem
THONG CAM NHA TAI VI MAY MINH HK CAI BAN PHIM TIENG VIET . GIUP MK NHA CAC BAN. MAI MK KIEM TRA RUI
tim x
|9-7X|=5x-3
|17x-5|-|17x+5|=0
|3x+4|=2.|2x-9|
5^x+2=625
(x-1)^x+2=(x-1)6x+4