\(\frac{x}{-3}=\frac{-75}{x}\)
\(\Rightarrow x^2=\left(-3\right)\cdot\left(-75\right)\)
\(\Rightarrow x^2=225\)
\(\Rightarrow\orbr{\begin{cases}x=15\\x=\left(-15\right)\end{cases}}\)
Ta có: \(\frac{X}{-3}=\frac{-75}{X}\)
ĐK:\(X\ne0\)
\(\Rightarrow X^2=\left(-3\right).\left(-75\right)=225\)
\(\Rightarrow X=\pm15\)(thỏa mãn)
Học tốt.
Tim tat ca cac so nguyen x thoa man: (x+2014)^2=64.(x+2007)^3
so cac gia tri cua x thoa man |x-5|/|x-3|=|x-1|/|x-3|
c1: Tap hop cac gia tri nguyen cua x thoa man \(\left(x+\frac{5}{4}\right)\left(x-\frac{19}{7}\right)\)<0
c2: Neu x,y la cac so nguyen thoa man 2xy+4y=6 thi y co the nhan nhung gia tri nam trong tap hop nao
c3: tim 3 so x,y,z biet x+y=8,x+z=10,y+z=12
C4: Gia tri cua x thoa man (x+3)^2=25 va x^3>0 la x=
tim tat ca cac cap so nguyen x,y thoa man 2^x+1.3^y=12^x
Tim cac gia tri x, y thoa man:
a, ( x2 - 1 ) ( x2 - 16 ) < 0 ca x thuoc z
b, 1/x - y/8 = 1/16 va x, y thuoc N
c, | x+1 | + | x+2 | + | x+3 | = x
tim tat ca cac so nguyen duong x,y thoa man : 2011x+7y=42231
tong cac gia tri nguyen cua x thoa man |x-1|<12
tap hop cac gia tri nguyen x thoa man |3x-4|=|x+2|
Tap hop cac gia tri nguyen cua x thoa man 3x-4=x+2
