Question 1102298
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125 + -25 square root 
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Do you mean,  {{{125+sqrt(-25)}}} ?

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{{{125+sqrt(-1*5*5)}}}

{{{125+5*sqrt(-1)}}}

{{{highlight_green(125+5i)}}}

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{{{system(a=125,b=5,highlight_green(a+b=130))}}}