Perform the operation indicated, then place the answer in the proper location on the grid. Write your answer in descending powers of x. What must be added to 3x - 7 to make x 2 + 4x - 1?

x² + x + 6

Step-by-step explanation:

We have to find the expression that must be added to (3x - 7) to make it (x² + 4x - 1).

To get the expression we have to subtract (3x - 7) from (x² + 4x - 1).

Now, (x² + 4x - 1) - (3x - 7)

= x² + x + 6

Therefore, (x² + x + 6) must be added to (3x - 7) to get the result (x² + 4x - 1).

So, the answer is x² + x + 6, which is in the descending power of x. (Answer)