Which of the following are polynomials? (Select all that apply)A1x2+5x − 12\frac{1}{x^{2}}+5x\ -\ 12x21​+5x − 12Bx−2 + 23x −99x^{-2}\ +\ 23x\ -99x−2+ 23x −99C12x2 +7x + 4\frac{1}{2}x^{2}\ +7x\ +\ 421​x2+7x + 4D5x2 − 12x5x^{2}\ -\ 12x5x2− 12x

- encouraging nationalism

- returning to conservative political policies

it the big letter b heart my answer

it foreshadows the theme of the paragraph and hints the topic that will be discussed in the paragraph!

although the crusades failed to capture jerusalem, they had several major impacts on western europe. they increased the authority of the king: sometimes nobles died in battle without leaving an heir in which case the king got their land. kings passed taxes to pay for the crusades.