Use synthetic substitution to find f(-3) for f(x) = 2x^3 - 6x^2 - 5x + 7.

Question

_3|2 -6 -5 7
6 36 93
______________
2 0 31|100

then I used direct substitution and just plugged -3 in for x and the final answer is f(-3) = 86

Answer 1

_-3/ 2 -6 -5 7

_________-6___36__-93__
2 -12 31 /-86

You left off the negative sign on your 3.