Question

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

Answer 1

x^2+x-3

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)