Radical Equations and Extraneous Roots Answers

Solve:To solve this equation, first add 2 tomultiply by 3 on square cube both sides.

Study the steps shown to solve the given equation.30 – 2x = x2 – 6x + 9 0 = x2 – 4x – 21 0 = (x + 3)(x – 7)Based on the above work, possible solutions of the equation are –7 and –3–7 and 3–3 and 73 and 7.

Solve:To solve this equation, first both sides.

x =

Study the steps shown to solve the given equation.30 – 2x = x2 – 6x + 9 0 = x2 – 4x – 21 0 = (x + 3)(x – 7)Based on the above work, possible solutions of the equation are .