Step-1

Title: Solving Equations with Radicals

Grade: 8-b Lesson: S2-L2

Explanation: Hello Students, time to practice and review the steps for the problem.

Discussion: Step1 Step2 Step3 Step4 Step5

Lesson Steps

Step Type Explanation Answer

1

Problem

Solve \$\sqrt(x) - 2 = 3\$.

2

Step

To isolate the square root term, we must move the −2 to the other side of the equation Add 2 to both sides to isolate the square root:

\$\sqrt(x) - 2 + 2 = 3 + 2\$

3

Step

Simplify:

\$\sqrt(x) = 5\$

4

Step

Square Both Sides to Eliminate the Square Root

\$(\sqrt(x))^2 = 5^2\$

x = 25

5

Step

Substitute x=25 back into the original equation to verify that it satisfies the equation

\$\sqrt(25) - 2 = 3\$

5 - 2 = 3

6

Step

The solution to the equation \$\sqrt(x) - 2 = 3 \$ is x = 25.

7

Choice.A

7 is not a solution because substituting 7 into the equation results \$\sqrt7 - 2 ne 3\$

7

8

Choice.B

25 is not a solution because substituting 25 into the equation results \$\sqrt25 - 2 = 3\$

25

9

Choice.C

-25 is not a solution because substituting -25 into the equation results \$\sqrt-25\$ being undefined in the real number system

-25

10

Choice.D

6 is not a solution because substituting 6 into the equation results \$\sqrt6 - 2 ne 3\$

6

11

Answer

Option

B

12

Sumup

Can you summarize what you’ve understood in the above steps?

Discussion: Step1 Step2 Step3 Step4 Step5


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