( 20 - 0,5 x ) \times ( 30 + x )
Evaluate
\left(x+30\right)\left(-\frac{x}{2}+20\right)
Expand
-\frac{x^{2}}{2}+5x+600
Graph
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600+20x-15x-0,5x^{2}
Apply the distributive property by multiplying each term of 20-0,5x by each term of 30+x.
600+5x-0,5x^{2}
Combine 20x and -15x to get 5x.
600+20x-15x-0,5x^{2}
Apply the distributive property by multiplying each term of 20-0,5x by each term of 30+x.
600+5x-0,5x^{2}
Combine 20x and -15x to get 5x.
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