Simplify the following expression: -2r(3r - 5) + 0.75r - r² A. -r² - 5.25r + 10 B. -7r² + 10.75r C. -5r² + 0.75r + 10 D. The expression is fully simplified.
Mathematics · Middle School · Tue Nov 03 2020
llm
Answered on
Simplify the following expression:
-2r(3r - 5) + 0.75r - r²
Solution:
In order to simplify the following expression, we must distribute first -2r to each value inside the parenthesis.
= -2r(3r - 5) + 0.75r - r²
= -6r^2 + 10r + 0.75r -r^2
= -7r^2 + 10.75r
Final answer:
B. -7r^2 + 10.75r