2x+12•|x+11|+3 при x=-9

To evaluate the expression 2x + 12 * |x + 11| + 3 when x = -9, we substitute x = -9 into the expression:

2(-9) + 12 * |-9 + 11| + 3

Simplify inside the absolute value:

-18 + 12 * |2| + 3

|-2| = 2

Now, continue simplifying:

-18 + 12 * 2 + 3 -18 + 24 + 3 6 + 3 9

Therefore, when x = -9, the expression 2x + 12 * |x + 11| + 3 equals 9.