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# 5.2 Algebra

TermDefinition
Expression A group of terms separated by a " +" or "
Variable or pronumeral. A letter used to represent a number we don't know. E.g. a, c.
Term Can be a single number, a number and a variable or variables multiplied together.
E.g. a, 4e, 6, d², are terms.
Constant A number on its own. E.g. 5a + 3b
Coefficient The number in front of a variable. E.g. coefficient of 4e is 4.
Equation A mathematical sentence that contains an equals sign. E.g. 5b × 4 = 12
Name the variables in this expression 4a + 3c a and c
List the terms in the expression r + 4s r and 4s
List the terms in the expression 7w - 2x + 9 The terms are 7w, -2x and 9
The coefficient of 3b 3
The constant in the expression 8h + f -5 -5
The expressions in this equation 14e * 2 = 3f + 10 14e * 2 and 3f + 10
x +6 an expression or equation? expression
Is 8q + 4 = 2n equation
2ab = 2 x a x b
de = d x e
b x b =
5( r + s) = 5 x (r + s)
Multiplication words Times, product of.