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i got a 100% on that

Wanna help me out?? :)

What's the question?

\[7\sqrt{13x}-15\sqrt{2x}+2\sqrt{13x}-4\sqrt{2x}\]

like asking what is
\[7y-15z+2y-4z\] exactly

Just combine like terms

How?

for example \(7\sqrt{13x}+2\sqrt{13x}=9\sqrt{13x}\)

and \[-15\sqrt{2x}-4\sqrt{2x}=-19\sqrt{2x}\]

yes

put them together and get
\[9\sqrt{13x}-19\sqrt{2x}\] there is nothing more than can be done

since \(\sqrt{13x}\)and \(\sqrt{2x}\) are not like terms, you cannot combine them in one term

So that is all? Wow, that's much easier than I thought! Thank you so much! ;D

yw

like most math, it is easy when you know what to do