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Beantwortet: mantelfläche angeben mathe

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Hallo,

zu a)

M= 2 ac +2 bc

M=2 *x*(x+3) +2 x*(x+3)

M=4 x^2+12x

M=4x(x+3)

zu b)

M= 2 ac +2 bc

M=2 *3a*2c+2 *4b*2c

M=12 ac +16 bc

M=4c(3a+4b)


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