Question

|2x+3|+|-5|при x=-2?

Answer 1

|-4+3|+5=|-1|+5=1+5=6

Answer 2

To evaluate the expression |2x + 3| + |-5| at x = -2, you simply substitute x with -2 and perform the calculations step by step:

Step 1: Replace x with -2 in the expression. |2(-2) + 3| + |-5|

Step 2: Simplify the expressions inside the absolute value signs. |-4 + 3| + |-5|

Step 3: Perform the additions inside the absolute value signs. | -1 | + | -5 |

Step 4: Evaluate the absolute values. 1 + 5

Step 5: Perform the final addition. 6

So, the value of the expression |2x + 3| + |-5| at x = -2 is 6.