11)
x(a -5) + y(5 - a)
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Answer:
( a - 5 ) ( x - y)
Step-by-step explanation:
x(a -5) + y(5 - a)
xa - 5x + 5y - ya
xa - ya - 5x + 5y
a ( x - y) - 5 ( x - y )
( a - 5 ) (x - y)
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