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1970даша
@1970даша
July 2022
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Сократите дробь: а) 16b^2/20b^4 b) 4x-12/x^2-9 в) 4-y^2/y^2-4y+4
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Fortiorisa
а) 16b^2/20b^4=4/5b^2
b) 4x-12/x^2-9=4(x-3)/(x-3)(x+3)=4/(x+3)
в) 4-y^2/y^2-4y+4=(2-y)(2+y)/(y-2)^2=(2+y)/(y-2)
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Answers & Comments
b) 4x-12/x^2-9=4(x-3)/(x-3)(x+3)=4/(x+3)
в) 4-y^2/y^2-4y+4=(2-y)(2+y)/(y-2)^2=(2+y)/(y-2)