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Lerok [7]
3 years ago
15

Someone pleaseeeeeeee helpppppp me pleaseee​

Mathematics
1 answer:
VladimirAG [237]3 years ago
7 0

Answer:

Step-by-step explanation:

20: is a drawing with compasses and rular

18e³f+45e²f^4 ( take 9 as a common factor, e² and f)

9e²f(2e+5f^3)

x²-4x-12 ( factorize)

(x-6)(x+2)=0

either : x-6=0

then x=6

or x+2=0

then x=2

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