Grade 9: Algebra

Algebra : letters and symbols are used to represent numbers and their relationships

Expression : a combination of numbers symbols and variable that has no equal sign

Degree of term : sum of all exponents on all variables in term

Polynomial : algebraic expressions that are made of terms and are all connected by addition and subtraction

Factor : number that divides exactly into another number

Factoring : finding what to multiple together

How to divide monomials : 40x3y10z ÷ 50 x30 y8= 4z 5 x27 y2

How to apply power of a power rules to monomials : (4c3d4)2=16c6 d8

How to common Factor (Reverse Expand) : 9x2y3+ 12xy4- 18x3y2+ 3xy2= 3xy2 (3xy+ 4y2- 6x2+ 1)