bonjour j ai besoin d aide pour une exercice de math factorise ces expressions a = x2 -16 b = 1 - y2 c = 100x2 - 9 d = 36 - 81z2 e = 4pi2 - 25 f = ( t +3 )2 - 1

bonjour

a = ( x - 4) ( x + 4)

b = ( 1 - y) 1 + y)

c = ( 10 x - 3) ( 10 x + 3 )

d = ( 6 - 9 z) ( 6 + 9 z )

e = ( 2 pi - 5) ( 2 pi + 5)

f = ( t + 3 - 4 ) ( t + 3 + 4) = ( t - 1) ( t + 7)

g = ( 2 x + 1 - 5) ( 2 x + 1 + 5) = ( 2 x - 4) ( 2 x + 6)

h = ( 3 i + 7 + i + 5) ( 3 i + 7 - i - 5) = ( 4 i + 12 ) ( 2 i + 2 )

ce sont toutes des différences de 2  carrés

Bonjour

factorise ces expressions

a = x^2 -16 = a^2 - b^2 = (a - b)(a + b)

A = (x - 4)(x + 4)

b = 1 - y^2 = a^2 - b^2 = ...

c = 100x^2 - 9 = (10x)^2 - 3^2 = ....

d = 36 - 81z^2 = 6^2 - (9z)^2 = ...

e = 4pi^2 - 25 = (2pi)^2 - 5^2 = ...

f = ( t +3 )^2 - 16 = (t + 3)^2 - 4^2

F = (t + 3 - 4)(t + 3 + 4)

F = (t - 1)(t + 7)

g = ( 2x + 1 )^2 - 25 = (2x + 1)^2 - 5^2

G = (2x + 1 - 5)(2x + 1 + 5)

G = (2x - 4)(2x + 6)

G = 2(x - 2) * 2(x + 3)

G = 4(x - 2)(x + 3)

h = ( 3i + 7 )^2 - ( i + 5 )^2

H = (3i + 7 - i - 5)(3i + 7 + i + 5)

H = ....