Partie 1
(4X-3)^2-2X(4X-3)
=(4X×4X)-(4X×3)+(3×3)-(3×4X)-(2X×4X)+(2X×3)
=16X^2-12X+9-12X-8X^2+6X
=8X^2-24X+9+6X
=8X^2-18X+9
Partie2
=(4X-3)(-2X+4X-3)
=(4X-3)(2X-3)
Partie 3
A(0)=(8×0)-(18×0)+9
=0+9
=9
A(1,5)=(2×1,5-3)(4×1,5-3)
=(3-3)(6-3)
=(0)×(3)
=0
Partie 4
(2X-3)(4X-3)=0
SOIT :
2X-3=0
2X=0+3
2X=3
2X/2=3/2
X=1,5
Soit :
4X-3=0
4X=0+3
4X=3
4X/4=3/4
X=0,75
DONC X=[0,75 ; 1,5]
Copyright © 2024 ELIBRARY.TIPS - All rights reserved.
Lista de comentários
Partie 1
(4X-3)^2-2X(4X-3)
=(4X×4X)-(4X×3)+(3×3)-(3×4X)-(2X×4X)+(2X×3)
=16X^2-12X+9-12X-8X^2+6X
=8X^2-24X+9+6X
=8X^2-18X+9
Partie2
(4X-3)^2-2X(4X-3)
=(4X-3)(-2X+4X-3)
=(4X-3)(2X-3)
=(4X-3)(2X-3)
Partie 3
A(0)=(8×0)-(18×0)+9
=0+9
=9
A(1,5)=(2×1,5-3)(4×1,5-3)
=(3-3)(6-3)
=(0)×(3)
=0
Partie 4
(2X-3)(4X-3)=0
SOIT :
2X-3=0
2X=0+3
2X=3
2X/2=3/2
X=1,5
Soit :
4X-3=0
4X=0+3
4X=3
4X/4=3/4
X=0,75
DONC X=[0,75 ; 1,5]