DJEF75011
Answered

developper. reduire .ordoner
(x-4)²-(x-1)(x-2)
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Sagot :

DROOPETTE
(x-4)²-(x-1)(x-2)
=x²-8x+16-(x²-2x-x+2)
=x²-8x+16-x²+2x+x-2
=-5x+14
(x-4)² - (x-1)(x-2)= 0
 (x-4)(x-4)-(x²-2x-x+2) = 0
 x²-4x-4x+16-x²+3x-2 = 0
 -5x+14 =0
-5x = -14
x=14/5