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anonymous
 one year ago
please help !!!!!
Choose any four (4) of the five radical equations below. Solve each equation, showing all steps leading to your answer. Then check your answer to determine if any of the solutions are extraneous
i just need you guys to help me in one question
4. 2√4  2x = 2  x
please help !!! how do we solve it ?
anonymous
 one year ago
please help !!!!! Choose any four (4) of the five radical equations below. Solve each equation, showing all steps leading to your answer. Then check your answer to determine if any of the solutions are extraneous i just need you guys to help me in one question 4. 2√4  2x = 2  x please help !!! how do we solve it ?

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random231
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441477010872:dw now square both sides and solve the eqn

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[2\sqrt{4}2x=2x\] Rearrange.\[2\sqrt{4}2=2xx\]\[\boxed{x=2\sqrt{4}2}\]

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0\[\sqrt{4}\] is this for real?!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No, I think it's four real xD im sorry i had to

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1You didnt simplify my answer? :(

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.0it's "four real" !!! lol!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0jhannybean, the 2x is also the under the radical. so can we really send it to the other side ?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1so your function is \(2\sqrt{42x}= 2x\)?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1Okay. Then we would have to begin by squaring both sides. OUr goal is to isolate the x's to one side.

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[(2\sqrt{42x})^2 = (2x)^2\]\[4(42x) = 44x+x^2\]\[168x=44x+x^2\]\[x^24x+8x=164\]\[x^2+4x12=0\]Can you factor this now?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0um is it (x + 2)(x  6) = 0 ?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[(x+2)(x6) = x^2 4x12 \ne x^2+4x12\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh i think i got it is it (x  2)( x + 6 ) ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then we simplify like this : x  2 = 0 x = 2 and x + 6 = 0 x =  6 so the answer is x = 2, 6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0omg thank you so much :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can i ask u one more question ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it is similar, \[\sqrt{5x  x } = 0\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how do we solve this ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Square both sides first, right?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1Again, we want to isolate x so we need to square both sides. Same method.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wouldnt it just be like 4x = 0 at the end? xD or just plain out 0?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oooooooo, look at me im doin stuff xD

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh sorry , made a mistake again i meant \[\sqrt{5x}  x = 0 \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wouldnt that be the same outcome?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1\[\sqrt{5x}x=0\]\[\sqrt{5x}=x\]\[(\sqrt{5x})^2=x^2\]\[5x=x^2\]\[x^25x=0\]\[x(x5)=0\]\[x=0\]\[x5=0 \iff x=5\]

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1@BweadedChicken no, not the same outccome.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh that was it ? i thought we need to complete the square and all any way , thank you you're the best :)

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1Yeah, completing the square comes along with complex quadratic functions that need to be simplified. You'll know when you see them.
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