Solve for each variable: 1. √36 = x 2. √169 = y 3. √1= z Ask Yourself: What number multiplied by it’s self will give me ___?
What if a negative is in front of the square root? What if a negative is inside the square root? The answer is negative. The answer is an imaginary number. We don’t have to worry about imaginary numbers in 8 th grade.
What if the radicand is not a perfect square? Next week we will learn how to determine what two integers the number is between. Today you may use a calculator to find the answer.
What if the radicand is a fraction? Example: √ 4 9 = √ √ 4 9 = 2 3 You Try √ 25 81