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Mathematics 10 Online
OpenStudy (skittles_for_life6422):

solve the equation. identify any extraneous solutions answer choice: 16 is a solution to the original equation. 16 is a solution to the original equation.-16 is an extraneous solution. no solution. -16 is a solution to the original equation. 16 is an extraneous solution.

OpenStudy (skittles_for_life6422):

\[\sqrt{w}=-4\]

OpenStudy (skittles_for_life6422):

@Loser66

OpenStudy (skittles_for_life6422):

can you help with this question and another one

OpenStudy (loser66):

To me, just 16 is a solution, no extraneous solution.

OpenStudy (skittles_for_life6422):

@Hero can you help with 2 question quickly

OpenStudy (skittles_for_life6422):

@jim_thompson5910 can you help

jimthompson5910 (jim_thompson5910):

when you replace w with 16, and then simplify the left side, what do you get?

OpenStudy (skittles_for_life6422):

4

jimthompson5910 (jim_thompson5910):

that's not equal to -4 on the right side

jimthompson5910 (jim_thompson5910):

so w = 16 is not a solution

jimthompson5910 (jim_thompson5910):

how about w = -16?

OpenStudy (skittles_for_life6422):

sorry i dont get this much can u explain

jimthompson5910 (jim_thompson5910):

well it turns out that you cannot take the square root of a negative number and get some real number as a result

jimthompson5910 (jim_thompson5910):

so w = -16 isn't a solution either

OpenStudy (skittles_for_life6422):

Ok

OpenStudy (skittles_for_life6422):

then what

jimthompson5910 (jim_thompson5910):

neither 16 nor -16 are solutions

OpenStudy (skittles_for_life6422):

So its no solution

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (skittles_for_life6422):

thanks now my last question if u dont mind

OpenStudy (skittles_for_life6422):

simplify the rational expression. state any excluded values. \[\frac{ 7x-14 }{ x-2}\] answer choices: x 7;where x doesn't equal 7 7;where x doesn't equal 2 0

jimthompson5910 (jim_thompson5910):

what do 7 and 14 have in common (in terms of factors)?

OpenStudy (skittles_for_life6422):

i think it b

OpenStudy (skittles_for_life6422):

*its

jimthompson5910 (jim_thompson5910):

why that choice?

OpenStudy (skittles_for_life6422):

because this is what i did|dw:1431658106480:dw|

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