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August 2022
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(4-х)(4+х)=х^2-2
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witch2
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(4-х)(4+х)=х^2-2
16+4x-4x-x^2=x^2-2
16-x^2=x^2-2
16-x^2-x^2+2=0
16-2x^2+2=0
18-2x^2=0
18=2x^2 /:2
9=x^2 / V
x= 3
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Answers & Comments
Verified answer
(4-х)(4+х)=х^2-216+4x-4x-x^2=x^2-2
16-x^2=x^2-2
16-x^2-x^2+2=0
16-2x^2+2=0
18-2x^2=0
18=2x^2 /:2
9=x^2 / V
x= 3