Question

The sum of two expression is ( x²+9x-13). If one of them ( x²-5x+7) find other.

Answer 1

Step-by-step explanation:

Let the other expression be f(x)

x²+9x-13=x²-5x+7+f(x)

9x-5x-13-7=f(x)

4x-20=f(x)

The other expression is 4x-20