Website Statistics A 25x15 B9x2x59x229xC5x13x25x15x1

Répondre :

25x-15
=5(5x-3)

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

(5x-1)(3x+2)+(5x-1)(5x+1)
=(5x-1)(3x+2+5x+1)
=(5x-1)(8x+3)
A = 5(5x-3)
B = (9x+2)(2x-5+2-9x)
   =(9x+2)(-7x-3)
C = (5x-1)(3x+2+5x+1)
   =(5x-1)(8x+3)

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