Algebra notes

Algebra

Negative numbers

• + + makes +
• + - makes -
• - + makes -
• - -makes+

Letters mulitplied together

• abc means a x b x c
• gn squared means g x n x n
• (gn)squared means g x g x n x n
• p(q - r)squared means p x (q - r) x (q - r)

Terms

• a term is a collection of numbers, letters and brackets, all multiplied/divided together
• terms are separated by + and - signs

simplifying

• put bubbles around each term
• move the bubbles in the best order so that like terms are together
• combine like terms

single brackets

• the thing outside the brackets multiplies each separate term inside the brackets
• when letters are multiplied…