Equations and inequalities Flashcards
1
Q
What is an expression?
A
A statement made of algebraic terms. It had no equals sign. Eg. 5x + 3b
2
Q
What is a formula?
A
A rule linking two or more variables. Eg. P= 2l+2w (perimeter of a rectangle)
3
Q
What is an equation?
A
An equation has an unknown that can be solved. X+4=10 is and equation, the solution is x=6
4
Q
What is an identity?
A
Two expressions that are equivalent. a+a+a=3a is an identity
5
Q
What is factorising?
A
The opposite of expanding brackets. It means to put the expression back into brackets.
