Factorise puis reduitd ses expressions 5x+4x 9x-2x 6x+x 2x+7x-5x 8xy-7xy 18z au carré -9z au Carré +3z au carré A3+A3+A3 1/2x+1/2x 5ab-9ab+ab

Bonsoir,

5x+4x = x(5 + 4) = 9x
9x-2x = x(9 - 2) = 7x
6x+x = x(6 + 1) = 7x
2x+7x-5x = x(2 + 7 - 5) = 4x
8xy-7xy = xy(8 - 7) = xy
18z^2 - 9z^2 +3z^2 = z^2(18 - 9 + 3) = 12z^2
A3+A3+A3 = A^3(1 + 1 + 1) = 3A^3
1/2x+1/2x = 1/2 x(1 + 1) = 2/2 x = x
5ab-9ab+ab = ab(5 - 9 + 1) = -3ab