Răspuns:
Explicație pas cu pas:
E(x) = 3x(x – 3) - (x − 3)(2x - 1)
E(x) = (x-3)(3x-2x+1) =>
E(x) = (x-3)(x+1)
F(a) = (a + 1)2 – 3a(a + 1)
F(a) = (a+1)(2-3a)
G(x) = (x + 2)(x + 1) - (x + 2)(2x - 1)
G(x) = (x+2)(x+1-2x+1) = (x+2)(2-x)
H(x) = (x + 1)2 – x( x + 1)
H(x) = (x+1)(2-x)
#copaceibrainly