Question 689070
{{{x^2-22x + 121 - 225 = 0}}}
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{{{x^2 - 22x - 104 = 0}}}
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Factors of 104 that have a difference of 22?  Not jumping right out, so complete the square or use the quadratic formula.
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completing the square...
{{{x^2 - 22x + 121 = 104 + 121}}}
{{{(x-11)^2 = 225}}}
{{{sqrt(x-11)^2}}} = +/- {{{sqrt(225)}}}
x-11 = +/- 15
x = 11 +/- 15
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{{{highlight_green(x = 26)}}}
AND
{{{highlight_green(x = -4)}}}
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