Lesson Example Discussion Quiz: Class Homework |
Step-4 |
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 |
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1 |
Problem |
Find the roots of the quadratic equation: |
|
2 |
Step |
the equation is in the form of |
\$ax^2+bx+c=0\$ |
3 |
Formula: |
by using this formula |
\$ x = (-b \pm \sqrt (b^2 - 4ac))/(2a) \$ |
4 |
Step |
converting the equation into formula |
\$ x = (-(-1) ± \sqrt((-1)^2 - 4\times(2)\times(-1)))/(2\times(2)) \$ |
5 |
Step |
Simplifing the equation |
\$ x = (1 ± \sqrt(1 + 8))/4 \$ |
6 |
Step |
Subtract the numbers under square root |
\$ x = (1 ± \sqrt(9))/4 \$ |
7 |
Step |
Take the multiples of '9' and then we get |
\$ x = (1 ± 3)/4\$ |
8 |
Step |
After Cancellation we get |
\$ x = (1 ± 3)/4 \$ |
9 |
Step |
calculating the terms |
\$ x = ((1 + 3)/4 , (1 - 3)/4) \$ |
10 |
Answer |
D |
Tutor: Questions
Seq | Type | Question | Audio |
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1 |
Problem |
What did you learn from this problem? |
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2 |
Clue |
What did you learn from the clues? |
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3 |
Hint |
What did you learn from the Hints? |
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4 |
Step |
What did you learn from the Steps? |
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5 |
Step |
How can we improve the Steps? |
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