Answer:
a) [tex](x - 3 i) (x + 3 i)[/tex]
b) [tex](\sqrt(5) - i x) (\sqrt(5) + i x)[/tex]
Step-by-step explanation:
Those are quadratic equations with complex solutions, you have to use the quadratic equation to find the roots that fit in the linear terms.
[tex]\frac{-b+\sqrt{b^2 - 4ac} }{2a}[/tex]
[tex]\frac{-b-\sqrt{b^2 - 4ac} }{2a}[/tex]
each equation will give you one term, for the first equation a=1, b=0, c=5 ; for the second a=1, b=0, c=5. Replacing that in the equations will give you the roots and the answer.
