4/7x-x=-9/49 |x-4/3|:75%=9.1/4 (4x ²-25)(x+1)=0 24/08/2021 Bởi Genesis 4/7x-x=-9/49 |x-4/3|:75%=9.1/4 (4x ²-25)(x+1)=0
4/7x-x=-9/49 x(4/7-1)=-9/49 x(-3/7)=-9/49 x =-9/49:(-3/7) x =3/7 |x-4/3|:75%= 9.1/4 |x-4/3|:75%=9/4 |x-4/3| =9/4.75% |x-4/3| =9/2 th1 x-4/3 =9/2 x =9/2+4/3 x =35/6 th2 x-4/3 =-9/2 x =-9/2+4/3 x =-19/6 Bình luận
4/7x-x=-9/49
x(4/7-1)=-9/49
x(-3/7)=-9/49
x =-9/49:(-3/7)
x =3/7
|x-4/3|:75%= 9.1/4
|x-4/3|:75%=9/4
|x-4/3| =9/4.75%
|x-4/3| =9/2
th1
x-4/3 =9/2
x =9/2+4/3
x =35/6
th2
x-4/3 =-9/2
x =-9/2+4/3
x =-19/6