Skip to content | Accessibility - list of access keys used on this site | Sitemap
Find what you need to know

Home > Subjects > Mathematics > Level 2 > 2.6 Algebra > Subject content > Solving a polynomial equation in factorised form

  • Subject: Mathematics
  • AS: 91261
  • Level: 2
  • Credits: 4
  • External

Mathematics 2.6 Apply algebraic methods in solving problems

Solving a polynomial equation in factorised form

To solve a polynomial equation that is already written in factorised form,

 e.g.   3x2(x – 7)(2x + 5) = 0

write each factor equal to 0 and solve each for x

        3x2 = 0       x – 7 = 0      2x + 5 = 0
          x2 = 0             x = 7           2x = –5
           x = 0                                  x = –2.5

Solutions are x = 0, 7, –2.5

Back to top

0

People logged in

234

People surfing this site

Most recent posts

English Level 1
1.1 WRITTEN TEXT study (AS90849) - post essays here

Posted by: fibroidsluck

7:50pm 12.11.2018

English Level 2
91099 [2.2] Level 2 VISUAL text post all your Qs here

Posted by: rl16432

7:34am 20.11.2018

English Level 3 & Scholarship
Scholarship English

Posted by: macbookpro

4:26pm 13.11.2018

Mathematics Level 1
Geometric reasoning external (91031)

Posted by: mathsteacher

4:18pm 19.11.2018

Mathematics Level 2
2018 LEVEL 2 MATHEMATICS EXAMINATION COMMENTS

Posted by: 2019year13

4:41pm 16.11.2018

Mathematics Level 3 Calculus & Calculus Scholarship
2018 CALCULUS & SCHOLARSHIP EXAMINATIONS - How did they

Posted by: fafnir

6:44pm 14.11.2018

Mathematics Level 3 Statistics & Statistics Scholarship
3.14 (AS91586) Probability distributions

Posted by: mathsteacher15

7:58am 10.11.2018

Sciences Level 1
SCIENCE 1.7 ASTRONOMY QUESTIONS

Posted by: Sally176

9:13am 02.08.2018

Physics Level 2
how did everyone find the level2 physics exam?

Posted by: yummychocolate12

6:46pm 25.11.2017

Physics Level 3 & Scholarship
PHYSICS 3.3 WAVES

Posted by: scienceteacher3

9:42pm 19.11.2018

Biology Level 2, 3 & Scholarship
Bio 2.7 Gene expression AS 91159 External

Posted by: scienceteacher5

1:26pm 15.08.2018

Chemistry Level 2, 3 & Scholarship
Chem 3.7 Aqueous equilibria - all questions here

Posted by: scienceteacher13

12:14pm 21.10.2018

Earth & Space Science
Resources other than the ESS Level 2 Workbook for learning

Posted by: mathsteacher

5:53pm 28.11.2017

Other
Level 1 History

Posted by: hanin_taha

12:39pm 18.11.2018