What are the four steps to solve a Square Root Equation?

Solve for x: (x - 5) ² = 81

Question

Mathematics

Alfred Lamb

6 September, 10:19

What are the four steps to solve a Square Root Equation?

Solve for x: (x - 5) ² = 81

+4

Answers (2)

Know the Answer?

Tiffany Frey · Answer 1

Answer:Isolate the radical expression.

Square both sides of the equation: If x = y then x2 = y2.

Once the radical is removed, solve for the unknown.

Check all answers.

x=14,-4

Pirate · Answer 2

x=14 or x = - 4

Step-by-step explanation:

hello:

(x - 5) ² = 81 equivalent to : (x - 5) ² - 9² = 0

by identity : a²-b² = (a-b) (a+b)

(x-5-9) (x-5+9) = 0

(x-14) (x+4) = 0

x-14 = 0 or x+4=0

x=14 or x = - 4

What are the four steps to solve a Square Root Equation?Solve for x: (x - 5) ² = 81

What are the four steps to solve a Square Root Equation?

Solve for x: (x - 5) ² = 81