Write a letter to Janet explaining her error and then correctly solve the problem below. You may NOT...
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Write a letter to Janet explaining her error and then correctly solve the problem below. You may NOT use your notes or talk with your partner. Add (3x 3 + 5x 2 – 7x + 2) + (6x 3 - 8x 2 + 2x – 5) 3x 3 + 5x 2 – 7x 2 6x 3 18x 6 30x 5 - 42x 4 12x 3 - 8x 2 - 24x 5 - 40x 4 56x 3 - 16x 2 + 2x 6x 4 10x 3 - 14x 2 4x Janet’s answer 18x 6 +6x 5 -76x 4 +63x 3 – 55x 2 +39x –
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Transcript of Write a letter to Janet explaining her error and then correctly solve the problem below. You may NOT...
Write a letter to Janet explaining her error and then correctly solve the problem below. You may NOT use your notes or talk with your partner. Add (3x3 + 5x2 – 7x + 2) + (6x3 - 8x2 + 2x – 5)
3x3 + 5x2
– 7x 2
6x3 18x6 30x5
-42x4
12x3
- 8x2
-24x5
-40x4
56x3
-16x2
+ 2x
6x4 10x3
-14x2
4x
– 5 -15x3
-25x2
35x -10
Janet’s answer18x6 +6x5 -76x4 +63x3 – 55x2 +39x – 10
Objective: Objective: Students will be able to Students will be able to demonstrate their understanding of demonstrate their understanding of factoring when a ≠1 factoring when a ≠1 by 1) correctly by 1) correctly solving at least 2 of the 4 “you try” solving at least 2 of the 4 “you try” problems, 2) completing at least 1 problems, 2) completing at least 1 problem via AB partner teach, and problem via AB partner teach, and 3) scoring at least a 2 on their exit 3) scoring at least a 2 on their exit
slip.slip.
Factoring when a ≠ 1 rules1. Multiply a & c and list the pairs of numbers that multiply to equal the value of (a)(c)
2. From those factors, pick a pair that either add or subtract to get b.3. Write the temporary factors with the two numbers.4. Put the value of a under both of your temporary factors.
5. Reduce the fractions, if possible.
6. Move denominators in front of x and list the factors.
Factor
2x2 – 5x – 7
Factor
15x2 + 7x – 2
Subtracting PolynomialsSubtracting Polynomials
Factor
1. 3x2 + 14x + 8
2. 10x2 – 23x + 12
1. 3x2 + 26x + 35
2. 2x2 + 7x + 6
1. Based on the problems we’ve just done, list the steps (without looking at your notes) to factoring when a ≠ 1 so that your partner can do a problem using only your steps.
2. Trade papers with your partner and use their steps to factor the following problem: 4x2 + 4x – 3
3. If you cannot complete the problem using only the steps written, put an arrow on the step where you stopped.
4. Give your partner’s paper back to them. Modify the steps you wrote to correct any incomplete or incorrect steps.
5. Finish the problem based on your partner’s new steps.
6. Try using the steps again to factor: 3x2 + 11x – 20
Subtracting PolynomialsSubtracting Polynomials
Factor
1. 2x2 - 7x + 3
2. 3x2 + 2x - 5
1. 4x2 + 12x + 5
2. 2x2 + 3x + 1
