15. Evaluate 5w^2 if w = .5
Is the answer 6.25?
13. 7(6x^2 + 5x + 4)
= 42x^2 + 35x + 28
Many mathematicians would consider
7(6x^2 + 5x + 4) to be more "simplified" than the expanded version.
15. 5(.5)^2 = 5(.25) = 1.25
I don't quite understand how you got that for #15..don't you have to take it to the second power?
And-- 7(6x^2 + 5x + 4) to be more "simplified" than the expanded version..what is this for?
For the other part, I simply commented that the original expression in factored form is considered to be more simplified than the expanded form. In other words, the question is poorly worded.
I should have simply said, "Expand"
Okay, thanks for your help!
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