Sagot :
1\9 + 1/6 est egale à :
1/9 +1/6 = 6/54 +9/54 = 15/54 = 5/18
x au carre-100:
x² - 100 = ( x+ 10 ) ( x -10)
racine de 9+16=
V9 + 16 = 3 +16 = 19
factoriser l'expression:
= (2x-7)(x+3)-(2x-7)(4x+1)
= ( 2x -7) ( x + 3 - 4x - 1)
= ( 2x - 7 ) ( - 3x + 2)
1\9 + 1/6 est egale à : 1/9 + 3/9 = 4/9
x²-100=(x-10)(x+10)
racine de 9+16= (racine de (3)+4)(racine de 3 - 4)
et factoriser l'expression: (2x-7)(x+3)-(2x-7)(4x+1) = (2x+7)[(x+3)-(4x+1)]
= (2x+7)[(x+3)-4x-1] = (2x+7)(x+3-4x-1) = (2x+7)(-3x+2)
