Saturday, 9 September 2017

ALGEBRA 2


If │4x – 7 │= 15; Find  x

Solution

±(4x – 11 )= 17

4x -11= 15   OR   –(4x-11) = 15

4x – 11 = 15    OR   -4x+11=15

4x = 15 + 11    OR   -4x= 15-11

4x = 26     OR   -4x  =   4
4      4               -4        -4

x = 13/2  OR  x = -1


Hence x = 13/2  OR  x = -1


TRY THIS………………………. 


If │2x – 7 │= 25; Find  x

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