Question

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Answer 1

Explicație pas cu pas:

$2\left[3 |2x + 5| - 12\right] - 25 = 17$

$2\left[3 |2x + 5| - 12\right] = 42$

$3 |2x + 5| - 12 = 21$

$3 |2x + 5| = 33$

$|2x + 5| = 11$

a)

$2x + 5 = 11 \\ 2x = 6 = > x = 3$

b)

$2x + 5 = - 11 \\ 2x = - 16 = > x = - 8$