X2 (5)2 = 25 (- 5)2 = 25 An identity, almost, as any number put into this expression will yield the same value.
(5×3)÷2
A numerical expression is ' 2 + 3' A numerical equation is ' 2 + 3 = 5'.
152
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.
-3
X2 (5)2 = 25 (- 5)2 = 25 An identity, almost, as any number put into this expression will yield the same value.
8
10
(5×3)÷2
A numerical expression is ' 2 + 3' A numerical equation is ' 2 + 3 = 5'.
A constant is a term without a variable so don't ask this user.
152
Well, darling, 2x plus 5 is just an algebraic expression that represents the sum of 2 times a variable x and 5. So, if you want to find the value of that expression, you need to know the value of x. Math can be a real hoot sometimes, can't it?
-3
-3
3(5-6) + 2 (54) -5 =105