what must be subtracted from a3-4a2+5a-6 to obtain a2-2a+1
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Answer:
a3-5a2+7a2-7
Step-by-step explanation:
a3-4a2+5a-6-( x )=a2 -2a+1
x=a3-4a2+5a-6-(a2-2a+1)
x=a3 -5a2+7a-7
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