and you should check that is correct... But if you solve the quadratic you can see that there are so real solutions for ...
The remainder when -4x^2 + 2x + 7 is divided by (x - c) is -5. Find a possible whole number value of c.
This is what I tried to do:
P(c)= -4c^2 + 2c + 7
-4c^2 + 2c + 7 = -5
-4c^2 + 2c = -12
Is this right? If so, what do I do next?