Răspuns:
Explicație pas cu pas:
a) x²+x-2 = x²+2x-x-2 = x(x+2)-(x+2) = (x+2)(x-1)
b) x²-x-2 = x²-2x+x-2 = x(x-2)+(x-2) = (x-2)(x+1)
c) x²+5x-24 = x²+3x-8x-24 = x(x+3)-8(x+3) = (x+3)(x-8)
d) x²-4x-12 = x²-6x+2x-12 = x(x-6)+2(x-6) = (x-6)(x+2)
e) x²+3x-10 = x²+5x-2x-10 = x(x+5)-2(x+5) = (x+5)(x-2)
f) x²-6x-7 = x²-7x+x-7 = x(x-7)+(x-7) = (x-7)(x+1)