please help I'm dying rn

Answer:
-3√5
Step-by-step explanation:
3√5-2√45
3√5-2•√9×√5
3√5-2•3√5
3√5-6√5
-3√5
Answer:
c. [tex] - 3 \sqrt{5} [/tex]
Step-by-step explanation:
[tex]3 \sqrt{5} - 2 \sqrt{45} [/tex]
[tex] - 2 \times 3 \sqrt{5} = - 6 \sqrt{5} [/tex]
[tex]3 \sqrt{5} - 6 \sqrt{5} [/tex]
[tex](3 - 6) \sqrt{5} = - 3 \sqrt{5} [/tex]
[tex] \boxed{\green{= - 3 \sqrt{5} }}[/tex]