5+3x(7-2)
3x + 8
It is a quadratic expression in the variable x.
When you have an algebraic expression with variables in it, you need to know the the value of each variable. The value of the expression is found by replacing the variables with their values and simplifying. For example, evaluate 2xy-3x if x=5 and y=-1. 2xy-3x = 2*5*(-1) -3*5 = -10-15 = -25.
3x+2 x is a variable. A variable is a symbol (x, y, etc...) that does not have an assigned value.
it means you multiply the number or variable by it self three times.For example,43 = 4*4*4 = 6453 = 5*5*5 = 125x3 = x*x*x3x3 = 3*x*x*x(3x)3 = 3x*3x*3x= 27x3
It is an expression that is equivalent to -3x-19.
12
A variable expression.
It is an expression that can be simplified to: 3x-20
The equivalent expression of 3x-9 plus 3x plus 5 is negative 4.
Say you have an algebraic expression y = 3x +4 For a given value of x = 5 substitute that number in place of x in the expression, so in this case y = 3(5) + 4 = 19