Question

solve simplify and use comma if necessary

Answer 1

\[\sqrt{9x+55} =x+5\]

Answer 2

x=5
Square both sides
9x+55=x^2+10x+25
x^2+x-30=0
x=-6; x=5
Retest, eliminate x=-6
so only solution is x=5

Answer 3

x=-6,5