evaluate the following expression if a= -2, h=5 and w= -8
aw^2(w is squared)-hw
I did (-2)(-8)^2-(5)(-8)
(-2)64-(5)(-8)
-128-(5)(-8)
-128-(-40)
-128=40= -88
I believe this is correct but I want to make sure.
Thank you for your help
correct
however, your line
-128=40= -88 makes no sense,
It is probably a typo, since the + and = are only a "shift" away from each other.
To evaluate the expression, you correctly substituted the given values of a, h, and w into the expression. However, there seems to be a mistake in your calculation.
Let's work through it step by step:
Start with the expression: "aw^2 - hw"
Substitute the values: (-2)(-8)^2 - (5)(-8)
Now, let's simplify each part:
1. (-2)(-8)^2:
(-8)^2 means (-8) * (-8), which equals 64.
(-2)(64) equals -128.
2. (5)(-8):
When multiplying a positive number (5) by a negative number (-8),
the product will be negative.
(5)(-8) equals -40.
Now let's combine the simplified parts:
-128 - (-40):
This can be rewritten as -128 + 40, which equals -88.
So the correct evaluation of the expression is -88, not -128+40.
Therefore, the correct evaluation of the expression is -88, not -128.
You are welcome! If you have any more questions, feel free to ask.