\(\left(x-2\right)^2=0\Leftrightarrow x-2=0\Leftrightarrow x=2\)
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Tìm x
a.(x+4).(-3x+9)=0
b.(x^2 +1).(x-5)=0
c.(/x/ +2).(x^2-1)=0
d.(x^2 -3).(2 x^2 +10)=0
e.(x-2)^2 -25=0
(x-2).(x+2)<0
Tìm x nguyên biết :
a) (x^2 -5)×(x^2 +1)=0
b)(x+3)×(x^2+1)=0
c)(x+5)×(x^2+1)<0
d)(x+5)×(x^2-4)=0
e)(x-2)×(-x^2-4)>0
g)(x^2+2)×(x+3)>0
h)(x+4)×|x+5|>0
i)(x+3)×(x-5)>0
Tìm các số nguyên x , sao cho :
a) (x^2+5)×(x^2-25)=0
b) ( x^2-5) ( x^2-25)<0
c) (x-2)×( x+1)=0
d) ( x^2+7)× ( x^2-49)<0
e) ( x^2-7) × ( x^2-49) <0
Tìmx,y biết x^2-25=0 b, (x+1)^2=4 c, (x-3)^3-64=0 d, 2^x+1-128=0 e, x^2 +(y-2)^2=0
x(x+1)<0
(x-6)(x+4)<0
(x+6)(2x+4)>0
(x^2+1)(x-9)>0
(x^2-7)(x^2-12)<0
(x^2-9)(x^2-4)<0
Tìm các số nguyên x , sao cho :
a) (x^2+5)×(x^2-25)=0
b) ( x^2-5) ( x^2-25)<0
c) (x-2)×( x+1)=0
d) ( x^2+7)× ( x^2-49)<0
e) ( x^2-7) × ( x^2-49) <0
nhanh
Tìm x thuộc Z biết:
a, x (x + 2) = 0
b, (x - 1) (x - 2) = 0
c, (x - 2) (x^2 + 1) = 0
d, (x + 1) (x^2 - 4) = 0
e, x (x - 3) > 0
Tìm x, y thuộc Z , biết :
a) ( 2x - 10 ) ^ 2 + ( 4 - 2y ) ^ 2 = 0
b) ( x - 2 ) . ( x + 3 ) > 0
c) ( x - 2 ) . ( x + 3 ) < 0
d) ( 2x - 6 ) . ( x - 5 ) > 0
e) ( 2x - 6 ) . ( x - 5 ) <0
f) ( x + 4 ) . ( 2 - x ) < 0
g) ( x + 4 ) . ( 2 - x ) > 0
h) ( x ^ 2 + 3 ) . ( 5x + 20 ) < 0
a,(x+4).(-3x+9)=0
b,(x-2)2-25=0
c,(x-2).(x+2)<0
d,(x2+5).(x-3)>0
tìn x ,biết
(x^2-36)(x^2-3)<0
2.(3x+12)>=0
(x^2+1)(4x-24)<=0
x^2+5x=0