Recopiez chacune des expressions suivantes en supprimant les parenthèses et les signes " X" inutiles
a) (x+y)x4
b) (6xX)xY
c) (5x4)+(3xX)
d) 7+(a+bxc)
a) (x+y)x4
b) (6xX)xY
c) (5x4)+(3xX)
d) 7+(a+bxc)
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Verified answer
a) (x+y)x4= 4x + 4y
b) (6xX)xY
= 6xy
c) (5x4)+(3xX)
= 20 + 3x
= 3x + 20
d) 7+(a+bxc)
= 7 + a + bc