(x3 +5)(x3+10)(x3+15)(x3+30) <0
tim x ho nha may ban
Tim x ,biet :
a) ( x -3 ) . ( x-10) > 0
b) ( x-8 ) . ( x -15 ) < 0
tim x thuoc Z de (x^3+5)(x^3+10)(x^3+30)<0
tim x, biet:
a,(3x-15)^7=0
b,4^2x-6=1
c,(3-x)^20:(3-x)^10=1(x khac 3)
d,(x-6)^3=(x-6)^2
Tim x thuoc so nguyen,biet:
a. (x+1).(x-2)=0
b.10+3(x-1)=10+6x
c. x-96=(9443-x)-15
tim x biet
a. (x-3)(x+5)=0
b./9-2x/+x+3=2x+15
c./x+1/+/x-1/=4
tim x biet :
x*(x-3)+5*(x-3)=0
(x+3)*(x-5)=0
7*(x-3)-4*(x-3)=0
(x^3 + 5)(x^3+10)(x^3+15)(x^3+30)<0
tim so nguyen x biet
a,9-25=[7-x]-[25+7]
b,-26-[x-7]=0
c,30+[32-x]=10
d,2.x-18=10
e,3.x+26=5
f,/x/-5=-12+30
g,[/x/+1].[4-2x]=0
h,8+/x/=/-8/+11
i,4.[x+1]-[3x+1]=14