Use synthetic division to divide. (Simplify your answer completely.) \[ \left(2 x^{3}+13 x^{2}+15 x-3\right) \div(x+5) \] \( \square, \quad x \neq-5 \)

Use synthetic division to find the quotient and remainder for \( \frac{-x^{3}+26 x-5}{x-5} \)

Find the zeros and fully factor \( f(x)=x^{3}-9 x^{2}+25 x-21 \), including factors for irrational zeros. Use radicals, not decimal approximations. The zeros are The fully factor form is \( f(x)= \)

2. La forma binómica del valor de \( z \) que satisface \( \frac{z}{i}+\frac{3 z-3 i}{1-i}=2-4 i \), es:

Using properties of logarithms, how can you rewrite \( 3\log_{2}(x) \)?

If \( \mathbf{a}, \mathbf{b}, \mathbf{c} \) are the roots of \( x^{3}+4 x+1=0 \) then \( \sum \frac{1}{a+b} \)