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schepotkina [342]
3 years ago
15

If f(x)= |4x - 1|, find the value of x if(x) = 7

Mathematics
2 answers:
pychu [463]3 years ago
7 0
X=2 i hope that helps soo yeah
vaieri [72.5K]3 years ago
6 0
F(x) = | 4x - 1 | .....when f(x) = 7
7 = | 4x - 1 |

4x - 1 = 7               -(4x - 1) = 7
4x = 7 + 1               -4x + 1 = 7
4x = 8                      -4x = 7 - 1
x = 8/4                     -4x = 6
x = 2                          x = -6/4
                                  x = - 3/2

solutions are x = -3/2, 2
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