Which statement describes a process to solve square root of b plus 20 end root minus square root of b is equal to 5 ?

Add the radical √b to both sides to get √(b + 20) = 5 + √b. Squaring once leaves another radical: b + 20 = 25 + 10√b + b. You must isolate that remaining radical and square a second time, so the correct description is “Add a radical term to both sides and square both sides twice.”

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