Question

chapter factorisation 1 m square minus 64
$81 ^{2} - 64$
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Answer 1

Answer:

Step-by-step explanation:

81^2-8^2=(81+8)(81-8) =89×73=6497

Answer 2

Answer:

6,497

Step-by-step explanation:

if you're talking about squaring the number then subtracting it by 40 then this is your answer.