What is (x+3) ^2-5 (x+3) + 3 as a simplified polynomial in standard form

x^2+x-3

Step-by-step explanation:

(x+3) ^2-5 (x+3) + 3

Distribute:

=x^2+6x+9 + (-5) (x) + (-5) (3) + 3

=x^2+6x+9 + (-5x) + (-15) + 3

Combine Like Terms:

=x^2+6x+9 + (-5x) + (-15) + 3

= (x^2) + (6x+-5x) + (9+-15+3)

=x^2+x + (-3)