Use synthetic substitution to evaluate the polynomial for the given value x = - 3. P (x) = 2x2 + 7x - 1

I'm assuming that is 2x squared, and not 2 multiplied by 2, as a given question usually wouldn't come in such a silly format. I do wish people would start using (2x^2) or (2x²), though.

Just substitute the value of x (-3) in to the equation to find the value of y, or P (x).

2 (-3) ² + 7 (-3) - 1 = - 4