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Can someone please help me out with these 2 problem thanks

Can Someone Please Help Me Out With These 2 Problem Thanks class=

Sagot :

[tex]3 \sqrt{-8} + 4 \sqrt{-50} [/tex]
[tex]= 3i \sqrt{8} + 4i \sqrt{50} [/tex]
[tex]= 3i \sqrt{4 \times 2} + 4i \sqrt{25 \times 2} [/tex]
[tex]= 6i \sqrt{2} + 20i \sqrt{2} [/tex]
[tex]= 26i \sqrt{2}[/tex]

I think part of the second question is cut off so I can't help but I hope I have helped with the first one.