Question 1018441
sqrt(b+1)=sqrt(b+6) -1;
square both sides
b+1=b+6-2sqrt(b+6)+1
collect terms
-6=-2 sqrt(b+6)
3=sqrt (b+6)
square
9=b+6
b=3
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must check to be sure this works
sqrt(4)=sqrt(9)-1
2=3-1.
It does.