Question

|а+9|-а| при а = - 4​

Answer 1

Ответ:

20

Пошаговое объяснение:

|a+9|*|-a| = |a+9|*|a|

Если а= -4, то: |-4+9|*|-4| = |5|*4 = 20

Answer 2

To find the value of |а + 9| - |а| when а = -4, we substitute -4 for а in the expression and evaluate it step by step.

|а + 9| - |а| = |(-4) + 9| - |-4|

Now, calculate the values within the absolute value bars:

|(-4) + 9| = |5| = 5 |-4| = 4

Now, substitute the values back into the expression:

|а + 9| - |а| = 5 - 4 = 1

So, when а = -4, the value of |а + 9| - |а| is 1.