SOLUTION: solve sqrt x + 5 = sqrt x^2 - 15
Algebra.Com
Question 228692: solve sqrt x + 5 = sqrt x^2 - 15
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Square both sides:
It's quadratic, so set it equal to zero by subtracting x +5 from each side:
There are two solutions:
x= 5 or x=-4
You HAVE TO CHECK the answers:
First solution: x=5
It checks!
Second solution: x=-4
It checks!
Both solutions work, x= 5, x=-4.
Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
RELATED QUESTIONS
How do I solve for:
a) 5 + sqrt. x = 15
b) 2 sqrt. x + 1 = sqrt. x -... (answered by alegriajoy33)
sqrt(5) * sqrt(10) * sqrt(x^2)... (answered by jim_thompson5910,mananth)
solve:(sqrt)(x-15)=(sqrt)(x)-1 (answered by lwsshak3)
solve:(sqrt)(x-15)=(sqrt)(x)-3 (answered by lynnlo)
Can you please solve this equation:
sqrt( x + 5) = sqrt(x^2 -... (answered by unlockmath,richwmiller)
\sqrt{x}+ 4 = 2\sqrt{x+5} solve and check (answered by Fombitz)
Solve... (answered by stanbon,ikleyn)
Solve these radical equations.
2x= sqrt(10x+6)
sqrt(x+5)= 2x
sqrt(2x-15)= x/4... (answered by Gogonati)
Solve
sqrt(x)... (answered by stanbon)