At a Glance - Evaluating Algebraic Expressions
To evaluate an algebraic expression, just plug numbers into the expression and simplify it.
Don't Forget: you will need your faithful friend PEMDAS (aka Order of Operations).
Here's a video example of math in action. Practice, practice, practice.
Evaluate the expression when x = 2, y = -3, and z = -1.
Find the values of the expression for x = -2, -1, 0, 1, 2
This question is asking us to evaluate the expression for five different values. It may be easiest to do this in chart form.
Which of these values (-2, -1, 0, 1, 2) makes this equation true?
Just like the previous problem, it is probably useful to make a chart.
Evaluate the expression 3x2 + 5xy – 2 for x = 3 and y = -2.
The formula for the surface area of a cone is πrs + πr2, where r is the radius of the base and s is the length of the slant. Find the surface area of a cone with radius 10 cm and a slant of 12 cm (use 3.14 for π).
Evaluate the expression x3 + x2 + x + 1 for x values equal to -2, -1, 0, 1, 2.
Which of these values of x (1, 2, 3, 4, 5, 6) make this equation true: x2 – 8x = -12?