Evaluate
\[\sqrt{7x}\left( \sqrt{x} -7\sqrt{7}\right)\]
Show work
@mathmate
@Astrophysics please help me, im dying lol this is my last question and im done with this one
Distribute the \[\sqrt{7x}\] \[\sqrt{7x} \times \sqrt{x}-\sqrt{7x} \times 7\sqrt{7}\]
\[\sqrt{7x} \times \sqrt{x} \implies \sqrt{7}\sqrt{x}\sqrt{x} \implies \sqrt{7}x\] can you do the other?
\[\sqrt{7x} \times 7\sqrt{7} \implies (1 \times 7)(\sqrt{7x}\sqrt{7}) \] you can simplify it more, I think you will be able to figure it out!
\[\sqrt{7x}*7*7*\sqrt{7}\rightarrow \sqrt{7}\sqrt{7}\sqrt{7}?\]
oh you already did it lol so what i did was obviously wrong haha
\[( 1 \times 7)(\sqrt{7x} \times \sqrt{7}) = 7\sqrt{x (7\times 7)} \implies 7\sqrt{49}\sqrt{x} \implies 7 \times 7 \sqrt{x}\] put it all together!
\[\sqrt{7x}-49\]
@Astrophysics
Am i right?
is my answer correct @mathmate ?
If the question is correct, then the answer is not! :(
No, that's not right compare your answer with the first part
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