Question 638012

[(5 - 5 x 10^1/2)(5 + 5 x 10^1/2)]^1/2


{{{((5 - 5*10^(1/2))(5 + 5*10^(1/2)))^(1/2)}}}


{{{((5 - 5sqrt(10))(5 + 5sqrt(10)))^(1/2)}}}


{{{(25 + 5*5sqrt(10) - 5*5sqrt(10) - 5sqrt(10)*5sqrt(10))^(1/2)}}} ----- Foiling binomials


{{{(25 - 25sqrt(100))^(1/2)}}} ----- {{{(25 - 250)^(1/2)}}} ---- {{{(- 225)^(1/2)}}} ----- {{{sqrt(- 225)}}} ---- {{{sqrt(225 * - 1)}}} ----- {{{sqrt(15^2 * - 1)}}} ----- {{{highlight_green(15i)}}}


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