1 / 6

ALGEBRA

ALGEBRA. what you need to know. Algebraic Manipulation. 1.The Laws of Indices. a²x a³= a²+³= a. When multiplying indices you add the powers. a³÷ a² = a³- a² =. a. When dividing indices you subtract the powers. (a²) ³ = a ²x³ = a.

arissa
Download Presentation

ALGEBRA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ALGEBRA what you need to know.

  2. Algebraic Manipulation.

  3. 1.The Laws of Indices a²x a³= a²+³= a When multiplying indices you add the powers a³÷ a² = a³- a² = a When dividing indices you subtract the powers (a²) ³ = a ²x³ = a When multiplying indices with brackets multiply powers

  4. 2. Collecting Like Terms Simplify 3x + 4y + 2x – 5y How many x’s and how many y’s have we got We have 3x + 2x = 5x and + 4y – 5y = - y So the answer is 5x- y

  5. 3. Multiplying Out Brackets 3 ( a + 1 ) = 3 x a + 3 x 1 = 3a + 3 You need to multiply what is inside the bracket by what is outside. 2 x ( x + y ) = 2 x ²+ 2 x y ( a + b ) ( c + d ) = a c + a d + b c + b d

  6. Using letter symbols There are several rules to follow, when writing expressions a + a + a is written as 3a a x b is written as ab a x 3 x b is written as 3ab b x b is written as this is not the same as 2b b² n x n x 3 is written as 3n² a x ( b + c ) is written as a ( b + c ) ( a + b ) ÷ c is written as

More Related