1-développer en utilisant une identité
remarquable:
A = ( x + 2 )²
B = ( 1 + t )²
C = ( y - 1 )²
D = ( z + 3 )²
E = ( t - 1 )²
F = ( 2 - x )²
G = ( y - 3 )²
H = (z - 1/2 )²
2-développer et réduire:
I = ( x - 1 ) ( x + 1 )
J = ( x + 2 ) ( x - 2 )
K = ( t - 3 ) ( t + 3 )
L= (y -1/2 ) ( y + 1/2 )
mercii bcccp d'avence ^_^
remarquable:
A = ( x + 2 )²
B = ( 1 + t )²
C = ( y - 1 )²
D = ( z + 3 )²
E = ( t - 1 )²
F = ( 2 - x )²
G = ( y - 3 )²
H = (z - 1/2 )²
2-développer et réduire:
I = ( x - 1 ) ( x + 1 )
J = ( x + 2 ) ( x - 2 )
K = ( t - 3 ) ( t + 3 )
L= (y -1/2 ) ( y + 1/2 )
mercii bcccp d'avence ^_^
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Verified answer
bonsoir;
A = ( x + 2 )²
x² +4x+4
B = ( 1 + t )²
= 1+2t+t²
C = ( y - 1 )²
=y²-2y-1
D = ( z + 3 )²
=z² +6z +9
E = ( t - 1 )²
=t² -2t +1
F = ( 2 - x )²
=4-4x+x²
G = ( y - 3 )²
=y² -6y +9
H = (z - 1/2 )²
= z² -z+1/4
2-développer et réduire:
I = ( x - 1 ) ( x + 1 )
= x² +x-x-1
=x²-1
J = ( x + 2 ) ( x - 2 )
=x² -2x +2x-4
=x² -4
K = ( t - 3 ) ( t + 3 )
= t² +3t -3t -9
= t² -9
L= (y -1/2 ) ( y + 1/2 )
= y² +y/2-y/2-1/4
=y²-1/4