Expand
2x^{2}-20x+49
Evaluate
2\left(x-5\right)^{2}-1
Graph
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2\left(x^{2}-10x+25\right)-1
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-5\right)^{2}.
2x^{2}-20x+50-1
Use the distributive property to multiply 2 by x^{2}-10x+25.
2x^{2}-20x+49
Subtract 1 from 50 to get 49.
2\left(x^{2}-10x+25\right)-1
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-5\right)^{2}.
2x^{2}-20x+50-1
Use the distributive property to multiply 2 by x^{2}-10x+25.
2x^{2}-20x+49
Subtract 1 from 50 to get 49.
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