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katlin95
Group Title
solve for x: sqrt x^2x5=5
A. 5
B. 6
C. 6
D. 5, 6
 one year ago
 one year ago
katlin95 Group Title
solve for x: sqrt x^2x5=5 A. 5 B. 6 C. 6 D. 5, 6
 one year ago
 one year ago

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katlin95 Group TitleBest ResponseYou've already chosen the best response.0
dw:1365027513803:dw
 one year ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.0
your question isa bit confusing do you mean square root oh ok
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
what do you get if you square both sides of the equation ?
 one year ago

katlin95 Group TitleBest ResponseYou've already chosen the best response.0
not sure..
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
how about the right side of the = sign ? what is 5*5 ?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
on the left use the rule that a sqrt times itself makes the square root "go away" in other words, sqrt(x) * sqrt(x) is x no matter how complicated x is.
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
All we want is the left side squared. here are some examples sq rt(1+2+3)* sq rt (1+2+3) = 1+2+3 or sq rt(x^2 * 30y)* sq rt (x^2*30y) = x^2*30y what is sq rt (x^2x5) * sq rt (x^2x5) ?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
do you need more examples of what happens when you square a square root ?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
in that case what is sq rt (x^2x5) * sq rt (x^2x5) ?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.0
I have not solved this, so I don't know off hand. You can learn to solve it or you can try substituting in possible answers and see if they work.
 one year ago
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