Answer Key - prealgebra.org · (3) Choose the correct answer to the question. What is the sum of 9...
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Answer Key original 6x − 7x 5 + 4x 2 + 9 standard form −7x 5 + 4x 2 + 6x + 9 leading coefficient (coefficient of the first term when in standard form) -7 5 original 6x − 7x 5 + 4x 2 + 9 standard form −7x 5 + 4x 2 + 6x + 9 degree (the highest exponent of the polynomial) (9 + 2x 2 − 11x) + (13x 2 − 7 + 2x) 9 + 2x 2 − 11x + 13x 2 − 7 + 2x 15x 2 − 9x + 2
Transcript of Answer Key - prealgebra.org · (3) Choose the correct answer to the question. What is the sum of 9...
![Page 1: Answer Key - prealgebra.org · (3) Choose the correct answer to the question. What is the sum of 9 + 2x2 — 1 Ix and 13x2 — A) 15x4 - 9x2 + 2 B) 15x2- 9x-2 c) 15x2 +2 D) 15x2 -](https://reader034.fdocuments.in/reader034/viewer/2022050509/5f9a66bd0cb4eb101f31e27e/html5/thumbnails/1.jpg)
Answer Key
original 6x − 7x5 + 4x
2 + 9
standard form −7x5 + 4x
2 + 6x + 9
leading coefficient
(coefficient of the first term when in standard form) -7
5
original 6x − 7x5 + 4x
2 + 9
standard form −7x5 + 4x
2 + 6x + 9
degree
(the highest exponent of the polynomial)
(9 + 2x2 − 11x) + (13x
2 − 7 + 2x)
9 + 2x2 − 11x + 13x
2 − 7 + 2x
15x2 − 9x + 2
![Page 2: Answer Key - prealgebra.org · (3) Choose the correct answer to the question. What is the sum of 9 + 2x2 — 1 Ix and 13x2 — A) 15x4 - 9x2 + 2 B) 15x2- 9x-2 c) 15x2 +2 D) 15x2 -](https://reader034.fdocuments.in/reader034/viewer/2022050509/5f9a66bd0cb4eb101f31e27e/html5/thumbnails/2.jpg)
(-3y2 − 7y − 2) − 1(5y
2 + 4y − 5)
-3y2 − 7y − 2 − 5y
2 − 4y + 5
-8y2 − 11y + 3
-4(-5x + 1) 20x − 4
![Page 3: Answer Key - prealgebra.org · (3) Choose the correct answer to the question. What is the sum of 9 + 2x2 — 1 Ix and 13x2 — A) 15x4 - 9x2 + 2 B) 15x2- 9x-2 c) 15x2 +2 D) 15x2 -](https://reader034.fdocuments.in/reader034/viewer/2022050509/5f9a66bd0cb4eb101f31e27e/html5/thumbnails/3.jpg)
(2x − 1)(-4x + 3)
-8x2 + 6x + 4x − 3
-8x2 + 10x − 3
(2x2 + x)(3x
2 – 2x + 1)
6x4 – 4x
3 + 2x2 + 3x
3 − 2x2 + 1x
6x4 – x3 + x
Remember: Area = length x width