If │2x – 123 │= 21; Find x
Solution
±(2x – 23 )= 21
2x -23= 21 OR –(2x-23) = 21
2x – 23 = 21 OR -2x+23= 21
2x = 21 + 23 OR -2x= 21-23
2x = 44
OR -2x
= -2
2 2
2
2
x = 22 OR x = -1
Hence x = 22 OR x = -1
TRY
THIS...............................
If │4a – 16 │= 36; Find a
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