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Solve sqrt (x+ a) = x −7 when a=-1

rebo1984

New member
Jan 26, 2017
18
Hi,

If a = -1, what is the solution set of the equation sqrt (x+ a) = x −7

{5}
{10}
{5, 10}
No solution


(5,10) correct?

Thanks
 

MarkFL

Administrator
Staff member
Feb 24, 2012
13,735
Hi,

If a = -1, what is the solution set of the equation sqrt (x+ a) = x −7

{5}
{10}
{5, 10}
No solution


(5,10) correct?

Thanks
What do you get when you substitute each potential solution into the original equation?
 

rebo1984

New member
Jan 26, 2017
18

MarkFL

Administrator
Staff member
Feb 24, 2012
13,735

Country Boy

Well-known member
MHB Math Helper
Jan 30, 2018
368