SOLUTION: Solve the equation. Check for extraneous solutions. sqaure root of x+3 = sqaure root of 2x-7
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Question 155292
:
Solve the equation. Check for extraneous solutions.
sqaure root of x+3 = sqaure root of 2x-7
Answer by
checkley77(12844)
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sqaure root of x+3 = sqaure root of 2x-7
sqrt(x+3)=sqrt(2x-7)squaring both sides we get:
x+3=2x-7
x-2x=-7-3
-x=-10
x=10 answer.
Proof:
sqrt(10+3)=sqrt(2*10-7)
sqrt13=sqrt(20-7)
sqrt13=sqrt13