Question

Q7-1f p(x)=2x³+ ax²- 11x + b is exactly divisible by (x - 2) and (x - 3), then the values of a and b are?​

Answer 1

Answer:

9a+b = -21 and 4a+b=6

Now subtracting we get 5a = -27 and not +27

So a = -27/5

Plug this in 4a+b=6. So -108/5 +b = 6

Or b = 138/5

The only error that you have committed is missing the negative sign for a value