Question

Tìm x biết

|x-12|=98

|x-98|=0+98

Answer 1

lz-12l=98

\(\Rightarrow\)z-12=98 hoac z-12=-98

th1:z-12=98

z=98+12

z=110

th2:z-12=-98

z=-98+12

z=-86

vay z=110 hoac z = -86

 

lx-98l=0+98

lx-98l=98

\(\Rightarrow\)x-98=98 hoac x-98=-98

th1:x-98=98

x=98+98

x=196

th2:x-98=-98

x=-98+98

x=0

vay x=196 hoac x = 0

chuan do nhe   l i k e    mk nha