Найдите значение выражения:
а) |2x − 8| при x = −2,5; 0; 4; 5; 9,5;
б) |6 − 12x| при x = −3; −1; 0; 1; 4.
x = −2,5
|2x − 8| = |2 * (−2,5) − 8| = |−5 − 8| = |−13| = 13
x = 0
|2x − 8| = |2 * 0 − 8| = |0 − 8| = |−8| = 8
x = 4
|2x − 8| = |2 * 4 − 8| = |8 − 8| = |0| = 0
x = 5
|2x − 8| = |2 * 5 − 8| = |10 − 8| = |2| = 2
x = 9,5
|2x − 8| = |2 * 9,5 − 8| = |19 − 8| = |11| = 11
x = −3
|6 − 12x| = |6 − 12 * (−3)| = |6 + 36| = |42| = 42
x = −1
|6 − 12x| = |6 − 12 * (−1)| = |6 + 12| = |18| = 18
x = 0
|6 − 12x| = |6 − 12 * 0| = |6 − 0| = |6| = 6
x = 1
|6 − 12x| = |6 − 12 * 1| = |6 − 12| = |−6| = 6
x = 4
|6 − 12x| = |6 − 12 * 4| = |6 − 48| = |−42| = 42