how to solve (9−4√5)²–(9+4√5)² plz fast I want answer
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Step-by-step explanation:
{(9−4√5)+(9+4√5)}{(9−4√5)-(9+4√5)}
=(9−4√5+9+4√5)(9−4√5-9-4√5)
=(18)(-8√5)
= -144√5
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