Evaluate
\frac{5\left(x+4\right)^{2}}{2}
Expand
\frac{5x^{2}}{2}+20x+40
Graph
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2.5\left(16+8x+x^{2}\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(4+x\right)^{2}.
40+20x+2.5x^{2}
Use the distributive property to multiply 2.5 by 16+8x+x^{2}.
2.5\left(16+8x+x^{2}\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(4+x\right)^{2}.
40+20x+2.5x^{2}
Use the distributive property to multiply 2.5 by 16+8x+x^{2}.
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