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ValentinkaMS [17]
3 years ago
9

Factor x

" class="latex-formula">
Mathematics
2 answers:
boyakko [2]3 years ago
7 0
Ok done. Thank to me :>

allochka39001 [22]3 years ago
5 0

Step-by-step explanation:

x^2-81=x^2-9^2=(x-9)(x+9)\\\\\text{Used}\\\\a^2-b^2=(a-b)(a+b)

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