Question
Les quel de ces calcul sont impossible ? svp
Exercice 1 : Développer si possible et réduire les expressions suivantes (6 points).
A = 2 + (x -3) – (2 – 3x) B = 2(4x -5) – 7( 4x -2) C = -3(1 + 2y) + 3y
D = 5 – ( - 2y + 3) E = (2 + 3x)( 4x -7) F = (2x – 1)(-4x +3) + 2(3x -1)
Exercice 1 : Développer si possible et réduire les expressions suivantes (6 points).
A = 2 + (x -3) – (2 – 3x) B = 2(4x -5) – 7( 4x -2) C = -3(1 + 2y) + 3y
D = 5 – ( - 2y + 3) E = (2 + 3x)( 4x -7) F = (2x – 1)(-4x +3) + 2(3x -1)
Asked by: USER1428
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347 Answers
Answer (347)
A = 2 + (x -3) – (2 – 3x)
a = 2 +x-3-2+3x
a =4x-3
B = 2(4x -5) – 7( 4x -2)
b = 8x-10-28x+14
b = -20x+4
C = -3(1 + 2y) + 3y
c = -3 -6y +3y
c = -3y -3
D = 5 – ( - 2y + 3)
d = 5 +2y -3
d = 2y +2
E = (2 + 3x)( 4x -7)
e = 8x-14+12x²-21x
e = 12x² -13x -14
F = (2x – 1)(-4x +3) + 2(3x -1)
f = -8x²+6x+4x-3 +6x-2
f = -8x²+16x-5
a = 2 +x-3-2+3x
a =4x-3
B = 2(4x -5) – 7( 4x -2)
b = 8x-10-28x+14
b = -20x+4
C = -3(1 + 2y) + 3y
c = -3 -6y +3y
c = -3y -3
D = 5 – ( - 2y + 3)
d = 5 +2y -3
d = 2y +2
E = (2 + 3x)( 4x -7)
e = 8x-14+12x²-21x
e = 12x² -13x -14
F = (2x – 1)(-4x +3) + 2(3x -1)
f = -8x²+6x+4x-3 +6x-2
f = -8x²+16x-5