Exercice 1
Trouve le facteur commun puis factorise les expressions suivantes :
A=15x+20
A=………………………………………………………………………………………………………………………………………..

B=x^2+x=
B=…………………………………………………………………………………………………………………………………………………………………………………

C=(2x+1)(3x+5)+(2x+1)(x+1)
C=………………………………………………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………..………… D=(5x-3)^2-(5x-3)(2+4x)
D=………………………………………………………………………………………………………………………………………..………………………………………………………………………………………………………………………………………..……………………
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Question

Answered

Sagot :

FAMILYS FAMILYS · Answer 1 · 2020-03-25T11:26:00+01:00

Bonjour,

A = 15x + 20

A = 5 * 3x + 5 * 4

A = 5(3x + 4)

B = x² + x

B = x * x + x * 1

B = x(x + 1)

C = (2x + 1)(3x + 5) + (2x + 1)(x + 1)

C = (2x + 1)(3x + 5 + x + 1)

C = (2x + 1)(4x + 6) = 2(2x + 1)(2x + 3)

D = (5x - 3)(5x -3) - (5x - 3)(2 + 4x)

D = (5x - 3)(5x - 3 - 2 - 4x)

D = (5x - 3)(x - 5)

Bonne journée :)

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