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3thenprove haam+n, and at

Answer»

if x-a is a factor the x=a , is the zero of the polynomial x³-mx²-2nax+na²

so, (a)³-ma²-2na²+na² = 0=> a³-ma²-na² = 0 => a²(a-m-n) = 0so with a= 0, or a = m+n

thank you



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