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121-22x+x^{2}+4^{2}-5^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(11-x\right)^{2}.
121-22x+x^{2}+16-5^{2}
Calculate 4 to the power of 2 and get 16.
137-22x+x^{2}-5^{2}
Add 121 and 16 to get 137.
137-22x+x^{2}-25
Calculate 5 to the power of 2 and get 25.
112-22x+x^{2}
Subtract 25 from 137 to get 112.
121-22x+x^{2}+4^{2}-5^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(11-x\right)^{2}.
121-22x+x^{2}+16-5^{2}
Calculate 4 to the power of 2 and get 16.
137-22x+x^{2}-5^{2}
Add 121 and 16 to get 137.
137-22x+x^{2}-25
Calculate 5 to the power of 2 and get 25.
112-22x+x^{2}
Subtract 25 from 137 to get 112.