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MARIE62290
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Exercice 1 Developper et reduire les expression suivante.

A= (4x+3)(5x-2)+(x-7)(2x+9)

 

B (4x+3)(5x-2)-(x-7)(2x+9)

 

c(xsur3+1)(4sur3-x)

 

D ( C-2(xsur9+1)

Sagot :

WINNER123

A = 20x²-8x+15x-6) + 2x²+9x-14x-63)

A = 20x² - 8x + 15x -6 +2x² +9x -14x -63

A = 22x² +2x -69

 

B = 20x²-8x+15x-6 -2x²-9x+14x+63

B = 18x² +21x +57

 

C =( x/3+1 ) ( 4/3-x) = 4x /-4x+12

 

D =je lis -2 multiplié par x/10

= -2x/10

 

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