xâ - 250x + 13600
= xâ - 125(2x) + 125â - 15625 + 13600
= ( x - 125 )â - 2025
= ( x - 125 )â - 45â
= ( x - 125 + 45 )( x - 125 - 45 )
= ( x - 80 )( x - 170 )
æè
= xâ - 170x - 80x + 13600
= x( x - 170 ) - 80( x - 170 )
= ( x - 80 )( x - 170 )
æè
= xâ - 80x - 170x + 13600
= x( x - 80 ) - 170( x - 80 )
= ( x - 80 )( x - 170 )
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