Bonjour pouvez vous m'aidez ;
supprime les parenthese reduis et ordonne les polynomes ci dessous
c) (-x³+x-2)-(x³+2x²-1)
d) (5x-(x-5x²+4)+(-5x²+2)
e) -(x³-x²+1)-(2x³+x²-1)
f) -(-2x³+3x-4x²)+(-6x²+3x+2)
supprime les parenthese reduis et ordonne les polynomes ci dessous
c) (-x³+x-2)-(x³+2x²-1)
d) (5x-(x-5x²+4)+(-5x²+2)
e) -(x³-x²+1)-(2x³+x²-1)
f) -(-2x³+3x-4x²)+(-6x²+3x+2)
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=-x³+x-2-x³-2x²+1
=-2x³-2x²+x-1
d) (5x-(x-5x²+4)+(-5x²+2)
=5x-x+5x²-4-5x²+2
=5x²-5x²+5x-x-4+2
=4x-2
e) -(x³-x²+1)-(2x³+x²-1)
=-x³+x²-1-2x³-x²+1
=-x³-2x³+x²-x²-1+1
=-3x³
f) -(-2x³+3x-4x²)+(-6x²+3x+2)
=2x³-3x+4x²-6x²+3x+2
=2x³-6x²+4x²-3x+3x+2
=2x³-2x²+2