Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Roots of the quadratic equation |
Grade: 9-a Lesson: S1-L6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
Find the roots of the quadratic equation: |
|
2 |
Step |
given equation is |
\$ax^2+bx+c=0\$ then |
3 |
Formula: |
formula for find the roots of the equation |
\$ x = (-b \pm \sqrt (b^2 - 4ac))/(2a) \$ |
4 |
Step |
after coverting the equation into formula |
\$ x = (-(-4) ± \sqrt((-4)^2 - 4\times(2)\times(-8)))/(2\times(2)) \$ |
5 |
Step |
Simplifing the equation |
\$ x = (4 ± \sqrt(16 +64))/4 \$ |
6 |
Hint |
Add the numbers under the square root |
\$ x = (4 ± \sqrt(80))/4 \$ |
7 |
Hint |
Take the multiples of '80' to simplify |
\$ x = (4 ± \sqrt(16\times5))/4\$ |
8 |
Step |
After simplification we get |
\$ x = (4 ± 4\sqrt(5))/4\$ |
9 |
Hint |
Taking common factor as [4]in the Numerator |
\$ x = (4(1 ± \sqrt(5)))/4 \$ |
10 |
Step |
calculating the terms |
\$ x = (\cancel(4)(1 ± \sqrt(5)))/\cancel(4) \$ |
11 |
Step |
After Cancellation we get |
\$ x = 1 ± \sqrt(5) \$ 12 |
Tutor: Questions
Seq | Type | Question | Audio |
---|---|---|---|
1 |
Problem |
What did you learn from this problem? |
|
2 |
Clue |
What did you learn from the clues? |
|
3 |
Hint |
What did you learn from the Hints? |
|
4 |
Step |
What did you learn from the Steps? |
|
5 |
Step |
How can we improve the Steps? |
Copyright © 2020-2022 saibook.us Contact: info@saibook.us Version: 1.5 Built: 20-February-2023 08:10 PM EST