{"result":{"text":"rightwards double arrow y to the power of n minus to the power of n C subscript 1. y to the power of n minus 1 end exponent plus to the power of n C subscript 2. y to the power of n minus 2 end exponent minus....... plus left parenthesis negative 1 right parenthesis to the power of n equals y to the power of n\nrightwards double arrow minus to the power of n C subscript 1. y to the power of n minus 1 end exponent plus to the power of n C subscript 2. y to the power of n minus 2 end exponent minus....... plus left parenthesis negative 1 right parenthesis to the power of n equals 0"},"status":"ok"}