5gz = 5 x 3 x 4 = 60
-2-3=+7
The expression "y - 3x + 4" is not a question, but rather a mathematical expression. It represents a combination of variables (y and x) and constants (3 and 4) connected by addition and subtraction operations. The final value of this expression will depend on the specific values assigned to the variables y and x. To simplify or evaluate this expression further, specific values for y and x would need to be provided.
21+1654+4
(21-3)times(7+4)
A variable is a letter that represents a number. An expression that contains at least one variable is called variable expression, also called algebraic expression. A variable expression has one or more terms. A term is a number, a variable, or a product of numbers and variables. For example,3(x^2)y + 2xy + x - 7 is a variable expression, where you have 4 terms.When working with variable expression, you often use the substitution principle:If a = b, then a may be replaced by b in any expression.The set of numbers that a variable may be represent is called replacement set, or domain, of the variable. To evaluate a variable expression, you replace each variable with one of its values and simplify the numerical expression that results.Example: Evaluate the expression 2x - 4y for x = 5 and y = -9.Solution:2x - 4y= 2(5) - 4(-9)= 10 + 36=46
5gz = 5 x 3 x 4 = 60
Unfortunately there is no expression to evaluate!
[10-(4*2)]*3
-2-3=+7
Okay, here is a postfix expression: 3 4 * 5 6 * + the evaluation: 3*4 + 5*6 12 + 30 42
2*3*4 = 24
2(1,0) - 3(2,-1) = (-4,3)
12 - 10 + 4 = 6
To evaluate the variable expression 3a + 2b, you need specific values for the variables a and b. Once you have those values, you substitute them into the expression and perform the arithmetic operations. For example, if a = 4 and b = 5, then 3(4) + 2(5) = 12 + 10 = 22. This gives you the final value of the expression.
Evaluate the following expression to 4*(12.25-4)/(9+2)
10
Evaluate the expression below when x = 2.3x2-2x+4