Form a polynomial \( f(x) \) with real coefficients having the given degree and zeros. Degree \( 4 ; \) zeros: \( 4+2 i ; 2 \) multiplicity 2 Let a represent the leading coefficient. The polynomial is \( f(x)=a(\square) \). (Type an expression using \( x \) as the variable. Use integers or fractions for any numbers in the expression. Simplify y.

Which expressions are equivalent to \( \frac{3}{5} x+3 \) ? Select all that apply. \( \begin{array}{ll}\text { QA. } 2+\frac{2}{5} x+1 & \text { ロB. } 2+\frac{x}{5}+1 \\ \square \text { C. } \frac{4}{5} x-\frac{1}{5} x+3 & \text { ロD. } \frac{2}{5} x+3 \frac{3}{5} x-1 \\ \text { पE. } 2+\frac{3}{5} x+1 & \text { ロF. } \frac{2}{5} x+3 \frac{1}{5} x\end{array} \)

The measure of an angle is eight times the measure of its complementary angle. What is the measure of each angle?

Which equation illustrates the identity property of multiplication? \( \begin{array}{l}(x+y i) \times z=(x z+y z i) \\ (x+y i) \times 0=0 \\ (x+y i) \times(z+w i)=(z+w i) \times(x+y i) \\ (x+y i) \times 1=(x+y i)\end{array} \)

Solve for \( z \) \[ \begin{array}{l}3 z=24 \\ z=\square\end{array} \]

11. Эгерде \( \left(7^{x}+7^{x}\right)^{3}=56 \) болсо, анда \( x= \) ? А) 1 Б) \( \frac{2}{3} \) В) \( \frac{1}{3} \) Г) \( \frac{1}{6} \) Д) \( \frac{1}{9} \)