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√7x - 60= √x

a. x = 12
b. x = -5, 12
c. x = 10
d. no solution

2007-12-21 05:36:06 · 3 answers · asked by mommawe'regoingtohell 1 in Science & Mathematics Mathematics

3 answers

Do you mean √(7x - 60)= √x? Because that's different from what you have typed, √7x - 60= √x.

Square both sides.
7x - 60 = x
-60 = -6x
10 = x

2007-12-21 05:47:50 · answer #1 · answered by MsMath 7 · 0 0

x= 10

2007-12-21 05:52:20 · answer #2 · answered by mercurysdemon 3 · 0 0

Should question be shown as:-
(√7 x - 60 ) = √ x
7x - 60 = x
6x = 60
x = 10
OPTION c

If so, you really must use brackets in order to avoid confusion.

2007-12-21 05:59:24 · answer #3 · answered by Como 7 · 1 0

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