1000 + 27 y 3 = 1 0 3 + ( 3 y ) 3 = ( 10 + 3 y ) ( 100 − 30 y + 9 y 2 )
The expression 1000 + 27 y 3 can be factored as ( 10 + 3 y ) ( 100 − 30 y + 9 y 2 ) . This is done by recognizing the sum of cubes formula. The values of a and b are identified as 10 and 3y respectively.
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