tap hop cac so nguyen x thoa man ( /x-2013/+2014)(xMU 2 +5 ) ( 9-x mu 2 ) =0 la S
tap hop ccac so nguyen x thoa man (| x - 2013 | + 2014 ( x mu 2 +5 ) ( 9 - x mu 2 = 0 la S = (...) Nhap cac phan tu theo thu tu tang dan , ngan cach nhau boi dau ;
tap hop cac so nguyen x thoa man (|x-2013|+2014)(x^2+5)(9-x^2)=0 la S=....
GIUP VOI TRA LOI DC MIK TICK CHO
vì (|..................................)=0 mà |x-2013|+2014>0;x^2+5>0 Nên 9-x^2=0=>x=3
tap hop cac so nguyen x thoa man (|x-2013|+2014)(x^2+5)(9-x^2)=0 la S=....
GIUP VOI TRA LOI DC MIK TICK CHO
tap hop cac so nguyen x thoa man(|x -2013|+2014)(x^2+5)(9-x^2)
tap hop cac so nguyen x thoa man 15-/x-2\=12 la
15- |x - 2| = 12
|x - 2| = 3
x - 2 = 3 => x= 5
x - 2= -3 => x = -1
{-1 ; 5}
Tap hop cac so nguyen x thoa man /+2/ = 10 la
tap hop cac so nguyen x thoa man \(x^2\)-4x=0 la.............
x2-4x=0
<=>x(x-4)=0
<=>x=0 hoặc x-4=0
<=>x=0 hoặc x=4
tap hop cac so nguyen x thoa man -2 ^.Ix+1I=-2^6 la
tap hop cac so nguyen x thoa man \(x^2-3<0\) la..........................
\(x^2-3<0\Rightarrow x^2<3\)
Mà \(x^2\ge0\) với mọi x
=>\(x^2\in\left\{0;1;2\right\}\)
=>\(x\in\left\{0;-1;1;\sqrt{2};-\sqrt{2}\right\}\)
Mà \(x\in Z\Rightarrow x\in\left\{-1;0;1\right\}\)