Algebra Basics

Algebraic expressions

·      Sings

·      Numbers

·      Letter

Algebraic expression dose not have an equal sign = but an equation dose

Constant- that it doesn’t change(always number)

Variable- that it changes(always letter)

Coefficient- the number that is besides a letter

·      (when the letter is alone it is always 1)

Order of operations- PEMDAS

Write each as an algebraic expression

1) The difference of 10 and 5//10-5       2)the quotient of 14 and 7// 14/7

3) u decreased by 17// u- 17                4)half of 14// 14/2

5) x increased by 6// x+6                     6)the product of x and 7// 7x

7)the sum of q and 8// q+8                   8)6 squared//62

the most commonly used variable is X, which it originates from the ancient Arabic works of AL-Jabr in Andalusia Spain. The X comes from “xei” which is an Old Spanish spelling of the Arabic term for thing.