factorise after taking out the HCF.a⁴-4a³+4a²
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Answer:
a²(a-2)²
Step-by-step explanation:
HCF=a²
taking out HCF, we get
=a²(a²-4a+4)
=a²(a²-2a-2a+4)
=a²[a(a-2)-2(a-2)]
=a²(a-2)(a-2)
=a²(a-2)²
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